The appearance of dentures as unnaturally large, uniform, or simply “fake”—often described as the “horse teeth” look—is a common aesthetic concern. This artificial perception arises when prosthetic teeth fail to replicate the subtle imperfections of a natural smile. While modern techniques offer highly aesthetic options, errors during the creation process can lead to an artificial appearance. Understanding the specific factors that cause this look is the first step toward achieving a natural and comfortable result.
Errors in Tooth Size and Arch Alignment
Unnaturally large teeth result primarily from selecting molds that are physically too big for the patient’s face or jaw structure. Denture teeth are manufactured in various molds, and choosing a set that is too large instantly creates a noticeable discrepancy.
The placement of the teeth in the prosthetic arch is also a significant factor in the perceived “buck teeth” look. Natural teeth follow a gentle curve, but a common error is setting artificial teeth in an arch that is too straight or positioned too far forward. This misplacement often occurs when teeth are set directly over a severely resorbed jaw ridge, rather than in the original position. Aesthetic success requires alignment with the facial midline and minor, natural-looking asymmetries, avoiding a uniform prosthetic appearance.
Material Quality and Shade Selection
The material quality and chosen shade play a major role in how artificial a denture looks. Natural enamel is slightly translucent, allowing light to pass through and scatter, especially at the biting edge. Lower-cost dentures often use opaque acrylics that block light, resulting in a flat, monochromatic color that signals artificiality.
High-quality prosthetic teeth are made of layered acrylic or porcelain designed to mimic natural light properties. These materials feature a more opaque dentin layer covered by a translucent enamel layer. Selecting a shade that is too bright or “ultra-white” creates an unnatural aesthetic, as natural teeth have subtle color variations and darken slightly with age.
The Role of Proper Fit and Gum Contour
An unnatural look is not solely dependent on the prosthetic teeth; the fit and contour of the pink acrylic base, which mimics the gums, are important factors. This base, known as the flange, provides the foundation for the teeth and supports the lips and cheeks. If the flange is too bulky or not properly sculpted, it can make the teeth appear to protrude or sit on an unnatural shelf.
The vertical dimension of the denture determines the space between the upper and lower jaws when the mouth is closed. If this dimension is too high, the teeth may look too long, and the lips may appear strained or overly supported. For a natural appearance, the acrylic’s gingival contour must be carefully “festooned” to reproduce the subtle, irregular depressions of natural gum tissue.
Partnering with Your Dentist for Aesthetic Success
Achieving a natural-looking denture requires clear communication with your dental professional.
The Wax Try-In Appointment
Before the denture is permanently fabricated, the dentist conducts a “wax try-in” appointment. This is the opportunity to see the teeth set in wax and evaluate the size, position, and overall appearance before the final material is processed. Patients should examine the wax model in a mirror and may bring a trusted friend or family member for an objective second opinion.
Providing Visual References
If possible, provide old photographs of your natural smile to give the dental team a visual reference for size and arrangement. You should confirm that the midline of the teeth aligns with your facial midline and that the amount of tooth showing when you speak and smile looks appropriate. Proactive feedback at this stage ensures necessary adjustments are made, preventing an artificial appearance.