Sylvester Stallone Teeth

Sylvester Stallone’s teeth have drawn attention for decades because his smile, speech pattern, and facial movement look different from many other actors. The most widely known reason is not simply dental work. Stallone was born with facial nerve damage linked to complications during birth, and that injury affected the lower left side of his face, including the movement of his lip and mouth. That can change how teeth appear when a person smiles, talks, or rests their face on camera.

Viewers often ask whether his teeth changed because of veneers, crowns, aging, or cosmetic treatment. The visible answer is likely a mix of factors. Over a career spanning more than 50 years, his teeth have appeared brighter, more even, and more camera-ready in later photographs than in early films from the 1970s and 1980s. That kind of change is common among public figures and can come from whitening, restorations, orthodontic refinement, porcelain veneers, crowns, or a combination of several treatments. No verified public record gives a complete clinical chart of his dental history, so any exact procedure list would be speculation.

What can be stated with confidence is that facial asymmetry can make dental alignment look unusual even when the teeth themselves are healthy. A lip that lifts unevenly may expose more of one side of the upper teeth, alter the appearance of the bite, and create the impression that the smile is crooked. Aging also changes tooth color, enamel texture, and gum display. Men in their 70s often show natural wear, flattening of edges, and darker shade values unless cosmetic dentistry has been used.

For readers trying to understand the difference between a dental issue and a facial-muscle issue, Stallone is a useful example. His appearance has likely been shaped by both. The facial paralysis explains much of the asymmetry people notice, while modern cosmetic dentistry may explain why his teeth look more polished in recent years than they did earlier in his career.

What Happened to Sylvester Stallone’s Teeth?

Sylvester Stallone’s teeth became a topic of public interest because his mouth and smile have looked asymmetric throughout his career. The key point is that the unusual appearance many people notice is widely connected to facial nerve damage from birth rather than a known accident that directly damaged his teeth. During his delivery, medical instruments reportedly injured nerves on one side of his face. That left part of his lower face with reduced mobility, which affected how his lip moved, how he spoke, and how his teeth appeared on screen.

When a person has partial facial paralysis, the teeth can seem crooked or uneven even if the dental arches are structurally sound. The reason is visual balance. If one side of the mouth lifts less than the other, the smile line changes. A camera close-up can exaggerate that effect. In film, HD television, and red-carpet photography, even a 1 to 2 millimeter difference in lip elevation can become noticeable. Stallone’s public image has been built through thousands of photographs and many close-up scenes, so subtle asymmetry has remained visible for decades.

That does not mean his teeth never changed. Like many actors with a long career, he appears to have had some degree of dental improvement over time. Early images from the 1970s show a more natural, less polished smile, with tooth shade and surface texture that fit the era before widespread cosmetic smile makeovers. In later decades, his teeth often look whiter and more uniform. Those changes could come from routine dentistry, professional bleaching, porcelain work, replacement restorations, or age-related maintenance. Public figures commonly update dental work every 10 to 15 years because restorations stain, gum lines shift, and cameras have become far more detailed.

Natural aging also matters. Enamel thins with time, dentin darkens, and edges wear down from chewing or grinding. A man in his 70s may show 0.5 to 1.5 millimeters of incisal wear on front teeth if no cosmetic refinements are done. If such wear is restored, the smile can look noticeably different. In Stallone’s case, the change people observe is likely a combination of his longstanding facial paralysis and later-stage dental enhancement rather than one dramatic event that “happened” to his teeth.

Why Does Sylvester Stallone’s Smile Look Different?

Sylvester Stallone’s smile looks different mainly because the muscles on one side of his face do not move in the same way as the other side. This has been publicly associated with nerve damage sustained at birth. A smile is not created by teeth alone. It depends on the lips, cheeks, jaw, facial symmetry, and how much each side of the mouth lifts. If one side has limited motion, the entire smile can appear slanted, tight, or incomplete even when the teeth are healthy and reasonably aligned.

That type of asymmetry becomes far more noticeable on screen than in ordinary daily life. Cameras magnify contrast, shadows, and movement patterns. In a high-resolution close-up, viewers can detect a small difference in lip height, the angle of the philtrum, or uneven tooth show between the right and left sides. A smile that reveals 8 upper teeth on one side and 6 on the other can look dramatically different, though the underlying dental structures may be normal. Stallone’s facial movement has long been part of his recognisable image, so audiences tend to focus on it.

His smile may also look different because it changed over time. In younger years, his teeth appeared more natural in color and shape, with the kind of variation many adults have. More recent photos often show brighter enamel, more uniform width, and cleaner edges. That can make the smile look transformed even if the facial asymmetry remains. Cosmetic dentistry often aims for symmetry, brightness, and proportional balance. In men, upper central incisors are frequently designed around 8.5 to 9.5 millimeters in width and 10 to 11.5 millimeters in length, depending on face shape and age. If restorations are added to create those proportions, the smile may look more refined than it did decades earlier.

Aging changes soft tissue too. Lips lose volume, teeth can show less at rest, and repeated facial expression deepens asymmetry. For someone with partial paralysis, these age-related changes can make one side appear more fixed over time. That is why Stallone’s smile may look different from year to year and decade to decade. The visible result is not just about the teeth. It reflects muscle movement, facial history, dentistry, lighting, and natural aging working together.

Did Sylvester Stallone Have a Birth Injury That Affected His Face and Teeth?

Yes, Sylvester Stallone has long been associated with a birth injury that affected the lower part of his face. Public accounts state that complications during delivery caused damage to facial nerves, reportedly linked to the use of forceps. This left him with partial paralysis on one side of his face. The effects are visible in the way his mouth rests, how his lip moves, and how he speaks. People often assume this means there was direct damage to his teeth, though the more accurate explanation is that the injury primarily affected muscle control and facial expression.

Facial nerve injury does not automatically harm the teeth themselves. Teeth develop from dental tissues and erupt according to jaw growth, genetics, nutrition, and oral health factors. If muscle function around the mouth is altered, the smile can look asymmetric, the lips may not frame the teeth evenly, and speech can sound different. That visual effect is often mistaken for crooked teeth or a dental condition. In Stallone’s case, the facial difference is the most documented factor behind his distinctive appearance.

There can still be an indirect relationship between facial muscle imbalance and dental appearance. If the lips do not seal evenly or the jaw muscles work differently over many years, bite patterns and wear can be influenced. Uneven pressure may contribute to grinding or irregular tooth display. The extent varies greatly from person to person. Some patients with long-term facial weakness have minimal bite disturbance, while others develop noticeable wear facets, strain on one side of the jaw, or cosmetic concerns about how the smile sits within the face. These issues often become more visible after age 40 and continue to change with aging.

For public figures, cosmetic correction is common. If a person has asymmetry from birth and also works in film for 40 to 50 years, dental maintenance becomes part of image management. Whitening, bonding, crowns, veneers, and contouring can improve what the camera sees, even though they do not change the underlying nerve injury. That distinction matters. The birth injury likely shaped Stallone’s facial movement and smile pattern. Any changes in the actual teeth over time would be a separate matter linked to routine dentistry, cosmetic treatment, and the normal wear that occurs across decades.

Has Sylvester Stallone Had Cosmetic Dentistry?

There is no universally confirmed public treatment plan listing every dental procedure Sylvester Stallone has received, though many observers believe he has likely had some form of cosmetic dentistry. Comparing early film stills and interviews from the 1970s and 1980s with more recent red-carpet photographs, his teeth often appear whiter, more even in length, and more uniform in shape. Those are common signs of aesthetic dental improvement, though they are not proof of a specific procedure on their own.

Cosmetic dentistry for a high-profile actor can include several levels of treatment. Professional whitening may lighten teeth by 2 to 8 shades depending on the method and baseline color. Composite bonding can reshape edges or close small gaps in a single visit of 45 to 90 minutes per tooth. Porcelain veneers are often used when patients want a more dramatic and durable change in shape, alignment, and brightness. Crowns may be chosen if teeth already have heavy wear, large fillings, or structural compromise. In celebrity dentistry, smile updates are often completed over 2 to 4 appointments, though full rehabilitation cases can take 6 to 12 weeks if temporaries, gum adjustments, and lab work are involved.

Stallone’s smile in later years has a polished quality that many cosmetic cases aim for: brighter shade, smoother surfaces, and front teeth that look more balanced in photos. That said, his facial asymmetry remains visible, which suggests that if cosmetic dentistry was performed, it was not intended to erase the natural movement pattern of his face. Dentists can improve teeth, but they cannot fully correct nerve-related lip motion through veneers or crowns alone.

From an industry perspective, it would be unusual for a major screen actor with a multi-decade career not to receive some cosmetic dental maintenance. Film and television place heavy emphasis on close-up appearance, and routine restorative updates are common every 10 to 15 years. Porcelain can chip, whitening fades within 6 to 24 months, and older restorations often need replacement. So while it cannot be stated as documented fact that Stallone had a specific veneer or crown case, the visual evidence strongly suggests some level of cosmetic dental treatment across the years.

Sylvester Stallone Teeth Before and After

When people search for Sylvester Stallone’s teeth before and after, they are usually trying to understand why his earlier smile looked rougher and more natural while later photos show teeth that seem brighter and more camera-ready. The “before” period generally refers to his early acting years, particularly the 1970s and early 1980s, when his smile appeared less polished. Tooth shade looked darker, the edges were less uniform, and there was more of the natural inconsistency that many adults have. In older film stock, that effect is partly softened by lower image resolution, though it is still visible.

The “after” appearance is usually linked to later decades, when Stallone’s teeth often looked cleaner, whiter, and more symmetrical in media appearances. This kind of visual shift is common among actors because modern dentistry can improve shape, texture, and color without changing a person beyond recognition. A before-and-after transformation does not always mean a full smile makeover. In some cases, a combination of whitening, enamel contouring, replacement fillings, and a few ceramic restorations can create a substantial difference.

What makes Stallone’s case more complex is that his facial asymmetry remained consistent over time. This means the smile still looked recognisably his, even if the teeth themselves appeared more refined. For readers comparing photographs, the most noticeable changes are usually these:

• Brighter overall shade, often consistent with professional bleaching or porcelain restorations

• More even incisal edges on the upper front teeth

• Reduced visual irregularity in tooth width and spacing

• A cleaner, more maintained look in high-resolution images

In cosmetic dentistry, a transformation like this may cost anywhere from $300 to $900 for whitening, $250 to $700 per tooth for bonding, $900 to $2,500 per veneer, and $1,000 to $3,000 per crown depending on the clinic and country. Celebrity-level treatment can exceed those averages due to custom ceramics and detailed smile design. Still, the before-and-after difference in Stallone’s smile appears to be the result of gradual enhancement rather than one dramatic one-time overhaul. His facial movement continues to shape how the smile is perceived, while the teeth themselves seem to have been maintained and likely improved over many years.

Does Sylvester Stallone Wear Veneers or Crowns?

No verified source publicly confirms whether Sylvester Stallone specifically wears veneers, crowns, or a mix of both, though many dental observers consider it plausible. His later smile has features often associated with restorative cosmetic work: brighter shade, smoother facial surfaces, and more uniform front-tooth proportions. Veneers and crowns are both used to improve appearance, yet they serve different clinical purposes, and it is helpful to separate the two.

Veneers are thin porcelain shells bonded to the front surface of teeth, usually for cosmetic changes in color, shape, minor spacing, or mild alignment correction. They are often used on the upper front 6 to 10 teeth. Crowns cover the entire visible part of a tooth and are more commonly recommended when a tooth has major damage, root canal treatment, large fillings, fractures, or severe wear. A patient can have veneers on some teeth and crowns on others, which is common in mature adults whose dental history includes both cosmetic and restorative needs.

Looking at Stallone’s public photos over the years, the upper front teeth sometimes appear too uniform and bright to be explained by whitening alone. That suggests either ceramic work or highly polished composite restorations. Porcelain veneers in celebrity cases often cost between $1,200 and $3,000 per tooth in the United States. Crowns typically range from $1,000 to $3,500 per tooth depending on material and laboratory quality. High-end aesthetic cases may involve digital smile design, mock-ups, temporaries for 1 to 3 weeks, and custom ceramics layered by hand for a natural finish.

One reason people suspect veneers or crowns is the consistency of his smile in public appearances. Natural teeth darken and wear with age. If a man in his late 60s or 70s still appears to have bright, sharply defined upper front teeth in flash photography, some degree of cosmetic restoration is often involved. That does not prove a full set of veneers. It could also reflect selective crowns, replacement work, and regular whitening maintenance. In Stallone’s case, the lasting asymmetry of his lip movement remains the stronger clue to his appearance than the exact type of dental restoration. Veneers or crowns may have enhanced his smile, though the facial nerve issue still defines how that smile is seen.

How Sylvester Stallone’s Facial Paralysis Affected His Appearance

Sylvester Stallone’s facial paralysis has had a clear effect on his appearance, and it is one of the main reasons his mouth, smile, and speech have always looked distinctive. The paralysis is widely linked to nerve damage at birth. It affects the lower part of one side of his face, creating reduced movement in the lip and surrounding muscles. When the muscles of facial expression do not contract evenly, the visual result can include a drooping mouth corner, an uneven smile line, and altered lip posture at rest.

This kind of asymmetry changes much more than a smile. It can affect how the jaw appears in profile, how speech sounds during certain consonants, and how the upper and lower teeth are shown when talking. In a person with normal muscle symmetry, the lips tend to lift and spread relatively evenly. In partial facial paralysis, one side may reveal more upper teeth while the other remains lower or tighter. Viewers often misread this as a purely dental issue, though the teeth may not be the main source of the difference.

Stallone’s screen presence has often turned this feature into part of his identity. His facial asymmetry contributed to a rugged and recognisable look that stood apart from the polished symmetry often associated with classic leading men. In cinematic terms, distinctive features can become an advantage. A face with visible character lines, asymmetry, and unusual muscle movement often appears more memorable on camera. That has likely shaped the way audiences perceive him, from Rocky in 1976 through later action roles.

From a medical and aesthetic standpoint, facial paralysis can also influence long-term oral presentation. Reduced lip control may affect how moisture is distributed around the mouth, how expressions settle in photographs, and how aging changes the lower face. Over decades, asymmetrical muscle use can deepen lines on one side more than the other. If dental work is done, it may improve tooth color and shape but still leave the overall asymmetry visible because the muscular framework remains unchanged. That seems to be part of Stallone’s appearance as the public has known it for over 50 years: his face does not move in a perfectly balanced way, and that has always affected how his teeth and smile are perceived.

Sylvester Stallone’s Teeth and Smile Transformation Over the Years

Sylvester Stallone’s teeth and smile have changed gradually rather than through one sudden public transformation. In early career images from the 1970s, his smile looked more natural and less cosmetically refined. Tooth color appeared darker than what audiences are now used to seeing in celebrity photography, and the front teeth did not have the highly uniform finish often associated with modern porcelain work. This was normal for the period. Cosmetic dentistry existed, though it was less common, less subtle, and far less influenced by social media close-ups and 4K filming.

As the years went on, Stallone’s smile began to look brighter and more maintained. In photographs from the 1990s onward, his teeth often appear more even in shape and lighter in shade. By the 2000s and 2010s, the smile had a more polished look that fits the kind of routine aesthetic upkeep many celebrities receive. People in the entertainment industry often refresh dental work every decade or so because restorations age, gum contours shift, and camera standards keep rising. A smile that looked excellent on 35 mm film may not look as refined under present-day digital close-up conditions.

The transformation is easier to understand when broken into likely factors rather than guesses about one procedure. Over a span of 40 to 50 years, these influences are realistic:

• Professional whitening repeated over time, often every 6 to 18 months for maintenance

• Replacement of older fillings or worn restorations with more aesthetic materials

• Minor reshaping or bonding to smooth uneven edges

• Possible veneers or crowns on front teeth to improve color and consistency

• Age-related wear management, since front teeth commonly lose edge length over decades

What did not disappear is the facial asymmetry caused by his birth-related nerve injury. That has remained the constant feature across every stage of his appearance. So the transformation over the years is best described as dental refinement layered over a face with longstanding asymmetrical movement. The teeth may have become whiter, more even, and more camera-friendly, though the smile still looks recognisably Stallone because the underlying facial dynamics stayed the same. That balance between enhancement and identity is common in successful celebrity dentistry.

Frequently Asked Questions About Sylvester Stallone’s Teeth

Sylvester Stallone’s teeth are often discussed because people notice that his smile, speech, and mouth movement differ from those of many other actors. Most of the common questions come down to one issue: whether the difference is dental, muscular, or both. The evidence available to the public points mainly to a facial nerve injury from birth that affected one side of his mouth. That condition shaped the way his teeth appear when he talks and smiles. Over time, his teeth also seem to have become brighter and more polished, which has led many people to wonder about cosmetic dentistry.

Below are concise answers to the questions readers ask most often.

• Did Sylvester Stallone damage his teeth? There is no widely documented public event showing a major injury that specifically damaged his teeth. The better-known issue is the birth-related facial nerve injury that changed how his mouth moves.

• Why does his smile look crooked? His smile appears uneven because one side of his face has reduced mobility. When lip movement is asymmetrical, teeth can look misaligned even if the dental structures are acceptable.

• Has he had dental work? It is very possible. His smile in later years looks brighter and more even than in his early career, which is consistent with whitening or restorative cosmetic treatment.

• Are the teeth natural? They may be partly natural and partly restored. Many adults in their 60s and 70s have some crowns, bonding, veneers, or replacement fillings, even when much of the original tooth structure remains.

  

• Does facial paralysis affect teeth? It affects appearance more than tooth anatomy. It can change lip movement, smile balance, and speech. Over many years, it may also influence wear patterns or the way teeth show during expression.

• Did cosmetic dentistry fix the asymmetry? Cosmetic dentistry can improve shape and color, though it does not fully correct nerve-related facial movement.

• Why do his teeth look different in old and new photos? Differences in age, lighting, camera resolution, grooming, whitening, and possible restorations all play a role.

For most readers, the clearest explanation is that Stallone’s mouth has always reflected both biology and maintenance: a lifelong facial movement difference paired with the kind of dental improvements many long-term screen actors receive.

Did Sylvester Stallone Fix His Teeth?

Sylvester Stallone appears to have improved or maintained his teeth over time, though no complete public dental record confirms exactly what was done. When people ask whether he “fixed” his teeth, they usually mean whether he had cosmetic or restorative work that changed his smile from its earlier appearance. Based on photo comparisons across several decades, that seems likely. His teeth in later years often look whiter, smoother, and more uniform than they did in the first stage of his career.

Fixing teeth can mean many different things. In dentistry, it may refer to treating decay, replacing old fillings, restoring worn enamel, correcting chips, whitening stained teeth, or using veneers or crowns to improve form and color. A public figure who works in front of cameras for 40 to 50 years almost always receives regular dental maintenance. Even if the person did not pursue a full “Hollywood smile,” normal restorative care would still be expected. Teeth undergo natural wear over time. Coffee, tea, wine, smoking history, medications, grinding, and aging all influence appearance.

If Stallone had his teeth fixed, the goal was probably enhancement rather than dramatic reinvention. His smile still looks recognisably his. The asymmetry tied to facial paralysis remains visible, which suggests that any dental treatment was focused on tooth aesthetics and function rather than changing his identity. That is how many high-end smile cases are designed. A dentist may improve shape by fractions of a millimeter, brighten shade from A3 to B1, smooth edges, and close tiny spaces while preserving the person’s established look.

For context, a moderate cosmetic update can involve:

• Whitening in 1 to 2 sessions of 45 to 90 minutes

• Bonding on 2 to 6 teeth over one or two visits

• Veneers on the upper front 6 to 10 teeth across 2 to 4 appointments

• Crown replacement if older restorations show wear, fracture, or discoloration

So, while it cannot be stated as verified fact that Stallone underwent a specific named smile makeover, the visual record strongly suggests that his teeth were improved and maintained over the years. The term “fixed” fits in a broad sense, though it should not be confused with fixing the facial nerve condition that influences how his mouth moves.

Are Sylvester Stallone’s Teeth Real?

Sylvester Stallone’s teeth are likely real in the sense that they are part of his natural dentition, though he may also have restorations such as crowns, veneers, bonding, or fillings. When people ask whether a celebrity’s teeth are real, they usually mean whether the visible smile is entirely natural or cosmetically enhanced. In modern dentistry, that question rarely has a simple yes-or-no answer. Many adults, including actors, keep most of their natural teeth while also receiving treatments to improve appearance and function.

There is no credible public evidence suggesting Stallone wears a removable full set of false teeth. His speech pattern and long-term smile dynamics are much more consistent with natural oral function shaped by facial nerve asymmetry. Dentures, whether partial or full, tend to create a different look and movement pattern, and nothing in his public appearance strongly points in that direction. It is far more plausible that he has natural teeth that have been maintained and possibly restored over time.

Restorations are common well before old age. By age 50, many adults already have multiple fillings or at least one crown. By age 70, the likelihood of some restorative work is high. Crowns are often used on teeth with old large fillings or fracture risk. Veneers may be chosen for cosmetic enhancement. Composite bonding can repair chips or improve shape. All of these still count as a smile built on real teeth, even if the visible outer surface has been refined.

Photographs from later stages of Stallone’s career show a brightness and uniformity that suggest some degree of dental intervention. That does not make the smile artificial in the way people often mean. It simply indicates maintenance. High-quality porcelain can mimic natural enamel translucency, and good cosmetic work is designed to look believable on camera. If a patient retains the tooth root and most of the tooth structure beneath the restoration, the teeth are still fundamentally real.

For readers trying to interpret celebrity images, the safest answer is this: Stallone almost certainly has his own teeth, though they may have been enhanced with cosmetic or restorative dentistry. The distinctive look people notice is influenced less by whether the teeth are “real” and more by the facial paralysis that changes how his mouth frames them.

Why Does Sylvester Stallone Talk the Way He Does?

Sylvester Stallone talks the way he does because of partial facial paralysis linked to a birth injury that affected the muscles and nerves around his mouth. His speech pattern is one of his most recognisable traits. The lower part of one side of his face has reduced mobility, which influences articulation, lip closure, and the shape of certain sounds. This is why his speech can sound slurred, weighted, or slightly asymmetrical, even though it has remained clear enough for a long and highly successful acting career.

Speech depends on a coordinated system involving the lips, tongue, jaw, soft palate, teeth, and airflow. Sounds such as B, P, M, F, and V rely heavily on lip contact or lip control. If one side of the mouth does not move fully, those sounds can be shaped differently. The result is not necessarily a speech disorder in the severe clinical sense, though it can create a unique rhythm and texture. In Stallone’s case, that vocal pattern became part of his screen identity.

The teeth may influence pronunciation to some degree, but they are not the main reason he speaks this way. Many people mistakenly assume his voice and mouth movement come from dental issues alone. The stronger explanation is neuromuscular. Facial paralysis affects expression and articulation at the same time. If the lip on one side lifts less or seals less firmly, speech may sound different without any major problem in the teeth themselves.

Actors often work intensively to use their voices effectively despite physical limitations. Over a career of more than 50 years, Stallone likely adapted his breathing, projection, jaw movement, and speech timing to suit his anatomy. That adaptation may be one reason his delivery sounds strong and recognisable rather than simply impaired. Distinct speech can become an advantage in performance when it adds authenticity and memorability.

Dental treatment can sometimes help speech if there are missing teeth, bite collapse, or poorly fitted restorations. In Stallone’s case, cosmetic dental work would not fully change the core sound of his voice because the deeper issue involves facial nerve function. His manner of speaking is closely tied to the same birth-related condition that affected his smile and facial movement, which is why the two are often noticed together.

What Condition Affected Sylvester Stallone’s Mouth?

The condition most often associated with Sylvester Stallone’s mouth is partial facial paralysis caused by nerve damage at birth. Public accounts commonly describe complications during delivery, including forceps use, as the source of this injury. The affected nerves influenced movement in the lower part of his face, which changed how his mouth rests, how it moves during speech, and how his smile appears. This is why his mouth has a distinct asymmetrical look that audiences have noticed since the beginning of his career.

Partial facial paralysis is different from a disease affecting the teeth or gums. It is a neuromuscular issue. The muscles around the lips, cheeks, and mouth corner do not contract equally on both sides. That can make one side look tighter, lower, or less responsive. It may also create the impression that the bite is off-center or that the teeth are uneven, even if the actual dental structures are relatively normal. In visual terms, the mouth frame is asymmetrical, so the teeth inside it can appear different depending on angle, lighting, and expression.

This kind of condition can influence several aspects of appearance and function:

• Uneven smile elevation

• Altered pronunciation of lip-dependent sounds

• One-sided mouth droop at rest

• Different tooth display from side to side

• A stronger impression of asymmetry in close-up photography

Some readers confuse this with Bell’s palsy, though Bell’s palsy is usually a temporary or acute paralysis that develops later in life. Stallone’s condition has generally been described as a lifelong result of birth trauma rather than a temporary facial nerve episode. That distinction matters because it explains why his mouth has looked consistent in its asymmetry across many decades.

If he had cosmetic or restorative dental work, that would be separate from the underlying condition. Dentistry can improve color, shape, and tooth symmetry. It cannot fully restore balanced lip movement caused by old nerve damage. For that reason, the condition that affected his mouth is best understood as a facial nerve injury with lasting visible effects on smile dynamics, speech, and facial expression rather than a problem originating in the teeth themselves.