Evidence of strong stabilizing effects on the evolution of boreoeutherian (Mammalia) dental proportions.

The dentition is an extremely important organ in mammals with variation in timing and sequence of eruption, crown morphology, and tooth size enabling a range of behavioral, dietary, and functional adaptations across the class. Within this suite of variable mammalian dental phenotypes, relative sizes of teeth reflect variation in the underlying genetic and developmental mechanisms. Two ratios of postcanine tooth lengths capture the relative size of premolars to molars (premolar-molar module, PMM), and among the three molars (molar module component, MMC), and are known to be heritable, independent of body size, and to vary significantly across primates.

Depression and its effects on the success of resin-based restorations.

Aims: There are many factors that play into the success or failure of dental treatments, and mental health has been hypothesized to increase failure rates in treatment such as resin-based restorations. The goal of this work was to evaluate if composite resin dental restorations perform the same in individuals with depression in comparison to matched individuals without depression.

Methods And Results: A total of 6,026 individuals from the University of Pittsburgh Dental Registry and DNA Repository project were evaluated and 326 patients with depression were selected for this study.