title: The effect of mandibular anterior teeth on the hypermobile tissue in the anterior part of the maxilla.
abstract: The absence of posterior occlusal contacts may result in increased anterior occlusal contacts and forces between natural mandibular dentition and artificial maxillary dentition. The impact of natural mandibular anterior teeth on the development of hypermobile tissues in the anterior part of the edentulous maxillary alveolar ridge was investigated in this study. The study group consisted of 410 patients with maxillary complete dentures and various mandibular dentitions from seven rest homes in Istanbul. The data; including hypermobile tissue in the anterior part of the maxilla, occlusal relationship, nocturnal wear, denture age, and duration of the maxillary full edentulism period were recorded. A chi-square test was performed to analyze the effects of following data: Existence of mandibular anterior teeth, poor adaptation of the dentures, nocturnal wear, types of occlusal contacts, and gender, on the resorption of the anterior part of the maxilla. To examine the effects of the presence of anterior mandibular teeth and early maxillary edentulism on bone resorption in the anterior part of the maxilla, a logistic regression analysis was performed. The results reveal that patients with edentulous maxilla and natural mandibular anterior teeth are approximately twice more likely to show risk of hypermobile tissue in the anterior part of the maxilla than are full edentulous patients. Further, edentulous periods exceeding 30 years in maxilla seem to increase this risk approximately 4 times.
authors.affiliation: Istanbul University Faculty of Dentistry, Department of Prosthodontics, 34390 Capa, Istanbul, Turkey. tsulun@istanbul.edu.tr
authors.forename: Tonguç
authors.initials: T
authors.lastname: Sülün
authors.forename: Olcay
authors.initials: O
authors.lastname: Sakar
authors.forename: Hakan
authors.initials: H
authors.lastname: Bilhan
authors.forename: Ebru
authors.initials: E
authors.lastname: Ispirgil
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000453:epidemiology / Q000209:etiology*; D019094:Dental Prosthesis, Implant-Supported / Q000009:adverse effects* / Q000706:statistics & numerical data; D003824:Denture, Complete / Q000009:adverse effects* / Q000706:statistics & numerical data; D005260:Female; D015577:Geriatric Assessment / Q000706:statistics & numerical data; D006707:Homes for the Aged; D006801:Humans; D008297:Male; D008334:Mandible / Q000503:physiopathology*; D008437:Maxilla / Q000503:physiopathology*; D008875:Middle Aged; D014070:Tooth / Q000503:physiopathology*; D014421:Turkey / Q000453:epidemiology