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Title: Impacted lower third molars and distal caries in the mandibular second molar. Is prophylactic removal of lower third molars justified?
Author: Marques, José
Montserrat Bosch, Marta
Barbosa de Figueiredo, Rui Pedro
Vílchez Pérez, Miguel-Ángel
Valmaseda Castellón, Eduardo
Gay Escoda, Cosme
Keywords: Dent molar
Extracció dental
Cirurgia oral
Càries dental
Teeth extraction
Oral surgery
Dental caries
Issue Date: 1-Jun-2017
Publisher: Medicina Oral SL
Abstract: Background: The objective of this study was to evaluate the association between the presence of mandibular third molars and the occurrence of carious lesions in the distal aspect of the mandibular second molar. Material and Methods: A retrospective cohort study comprising 327 lower third molars extracted in the Oral Surgery and Implantology Master's Degree program of the School of Dentistry of the University of Barcelona (Barcelona, Spain) was carried out. A descriptive and bivariate analysis was made. The diagnosis of caries in the second molar and the position of the mandibular third molar were evaluated through panoramic radiographies. Results: The sample included 203 patients, 94 males (46.3%) and 109 females (53.7%), with a mean age of 26,8 years and 327 lower third molars. The prevalence of second molar distal caries was 25.4% (95% CI= 20.6% to 30.2%). This pathology was significantly more frequent when the third molar was in a horizontal position (27.7%), when the contact point was at (45,8%) or below (47.0%) the cementoenamel junction (CEJ), and when the distal CEJ of the mandibular second molar and the mesial CEJ of the third molar was 7 to 12 mm apart. Conclusions: Horizontal lower third molars with contact points at or below the CEJ are more likely to produce distal caries in the mandibular second molars. Due to the high prevalence of this pathology (20.6% to 30.2%), a prophylactic removal of lower third molars with the above-mentioned features might be advisable.
Note: Reproducció del document publicat a:
It is part of: Journal of Clinical and Experimental Dentistry, 2017, vol. 9, num. 6, p. e794-e798
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ISSN: 1989-5488
Appears in Collections:Articles publicats en revistes (Odontostomatologia)
Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))

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