IADR Abstract Archives
The Relationship Between Oral Torus and Oral Function in a Group of Healthy Male Dentate Subjects
Objectives: Oral torus (Torus) is a form of exostosis, most commonly found on midline region of the palatum (torus palatinus: TP) and lingual region of the mandibular bone (torus mandibularis: TM). Torus may affect pronunciation, interfere with swallowing, and cause pain on mucosa under improper/mal-designed prostheses. It can relate to temporomandibular disorder/orofacial pain (TMD/OFP). This study was designed to clarify the relationship between the development of torus and oral function in healthy male dentate subjects.
Methods: Fifty students of Hiroshima University School of Dentistry were participated in this study. None of the subjects wore dentures or suffered from tongue pain or severe periodontitis. Subjects were interviewed for general and oral diseases including TMD/OFP, tooth clenching, grinding, and snoring. The state of residual teeth, occlusion, site and size of torus formation, buccal mucosa ridging, and dental attrition were noted. Occlusal vertical dimension, maximum voluntary occlusal force (MVOF), occlusal contact area and maximum voluntary tongue pressure (MVTP) were also measured. One-way analysis of variance with Tukey`s HSD multiple comparison assay, Chi-square test, Student’s t test or Mann-Whitney U test were used for statistical analyses. P < 0.05 was considered to be significant.
Results: Subjects with torus were prone to have buccal mucosa ridging, but only subjects with TM were prone to have dental attrition. Subjects with TP and/or TM had lower occlusal vertical dimension than subjects without torus. MVOF of subjects with TP was not different from that of subjects without torus. However, subjects with TM exerted higher MVOF than subjects without torus. Occlusal contact area in subjects with TM was bigger than that in subjects without torus. MVTP of subjects with torus was higher than that of subjects without torus.
Conclusions: Within the scope of this study, torus, especially TM, may correlate with some oral ortho- and/or para-functions.
Methods: Fifty students of Hiroshima University School of Dentistry were participated in this study. None of the subjects wore dentures or suffered from tongue pain or severe periodontitis. Subjects were interviewed for general and oral diseases including TMD/OFP, tooth clenching, grinding, and snoring. The state of residual teeth, occlusion, site and size of torus formation, buccal mucosa ridging, and dental attrition were noted. Occlusal vertical dimension, maximum voluntary occlusal force (MVOF), occlusal contact area and maximum voluntary tongue pressure (MVTP) were also measured. One-way analysis of variance with Tukey`s HSD multiple comparison assay, Chi-square test, Student’s t test or Mann-Whitney U test were used for statistical analyses. P < 0.05 was considered to be significant.
Results: Subjects with torus were prone to have buccal mucosa ridging, but only subjects with TM were prone to have dental attrition. Subjects with TP and/or TM had lower occlusal vertical dimension than subjects without torus. MVOF of subjects with TP was not different from that of subjects without torus. However, subjects with TM exerted higher MVOF than subjects without torus. Occlusal contact area in subjects with TM was bigger than that in subjects without torus. MVTP of subjects with torus was higher than that of subjects without torus.
Conclusions: Within the scope of this study, torus, especially TM, may correlate with some oral ortho- and/or para-functions.