A diverse community of bacteria comprises tooth plaque biofilm.
The second subset, called the "severe wear teeth" (N = 237 teeth), comprised of all teeth that were scored with a value of 3 or greater on the tooth wear index (Fig. 2).
The first subset, the normal wear teeth (N = 1230 teeth), was comprised of all teeth that were scored with a value of 2 or less on Hooper's tooth wear index since moderate tooth wear may be considered normal [16].
The first subset, called the "non-recession teeth" (N = 1222 teeth), was comprised of all teeth whose measurements were scored 0 mm for the clinical recession measurement.
The test sets were comprised of teeth from members of the Orders Artiodactyla, Carnivora, Chiroptera, Perissodactyla, Primates and Rodentia (see Table S1 for full species list).
Squaliformes are well documented in the fossil record for sharks, which is largely comprised of teeth.
Additionally information was collected from clinical and referral notes which comprised of teeth requested and planned for extraction, recorded pain, anxiety, medical history, dates of referral as well as notes on any additional information recorded.
This review article highlights some of the most prospective breakthroughs made in this research direction, with the hard tissues in main focus being those comprising bone, tooth cementum, dentin and enamel.
The second subset, called the "recession teeth" (N = 300 teeth), was comprised of measurements on all teeth that were scored 1 mm or greater including teeth with minimal recession.
As a result, when estimating the mean number of missing teeth for DMF and Stfor dentitions comprising of 28 teeth this number should be reduced with approximately 0.25 per jaw.
