Abstract
This study evaluates relationships in humans between various occlusal contacts and the presence of deeper probing depths, reduced width of keratinized tissue, and less than favourable initial prognosis. The tooth level relationship between various occlusal contacts and pocket probing depths, width of keratinized gingiva, and prognosis at the time of initial examination was evaluated (multivariate model) in a group of patients (85 patients, 2219 teeth) with active periodontal disease. The following were noted to be associated with significantly deeper pocket probing depths: premature contacts in centric relation (0.89 mm, p<0.0001), posterior protrusive contacts (0.51 mm, p<0.0001), balancing contacts (1.01 mm, p<0.0001), combined working and balancing contacts (1.13 mm, p<0.0001), and the length of slide between centric relation and centric occlusion. Protrusive contacts on anterior teeth were significantly associated with shallower probing depths (-0.18 mm, p=0.0076) and a wider zone of keratinized tissue (0.16 mm, p=0.0065). Balancing contacts with and without working contacts and centric prematurities were all associated with an increased incidence of a less than "Good" prognosis Multiple types of occlusal contacts were show...Continue Reading
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