Tooth Morphology
The study of tooth shape and form as it relates to dental aesthetics.
Tooth morphology describes the three-dimensional shape characteristics of teeth. Upper central incisors are classified into three basic forms: square (straight lateral edges), ovoid (rounded, most common), and triangular (wider at the incisal edge, narrower cervically). These forms correlate loosely with facial shape — square face/square teeth, oval face/ovoid teeth. Beyond basic form, morphological details include: line angles (transitions between facial surfaces that create light and shadow), developmental lobes (three vertical ridges on the facial surface), incisal edge shape (curved, straight, or uneven), and surface macro/micro texture. In cosmetic dentistry, matching or designing these subtle features creates the difference between a natural-looking result and an obviously 'fake' appearance. Master ceramists meticulously replicate these details in porcelain restorations.