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Impacted lower third molars and distal caries in the mandibular second molar. Is prophylactic removal of lower third molars justified?

Authors :
Marta Montserrat-Bosch
Rui Figueiredo
José Marques
Miguel-Angel Vilchez-Pérez
Eduard Valmaseda-Castellón
Cosme Gay-Escoda
Universitat de Barcelona
Source :
Marques, José ; Montserrat Bosch, Marta ; Figueiredo, Rui ; Vílchez Pérez, Miguel Angel ; Valmaseda Castellón, E. ; Gay Escoda, Cosme. Impacted lower third molars and distal caries in the mandibular second molar. Is prophylactic removal of lower third molars justified?. En: Journal of Clinical and Experimental Dentistry, 9 6 2017: 794-798, Recercat. Dipósit de la Recerca de Catalunya, instname, Dipòsit Digital de la UB, Universidad de Barcelona, RODERIC. Repositorio Institucional de la Universitat de Valéncia, Journal of Clinical and Experimental Dentistry
Publication Year :
2017

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. Key words:Second molar, caries, third molar, prophylactic removal.

Details

Database :
OpenAIRE
Journal :
Marques, José ; Montserrat Bosch, Marta ; Figueiredo, Rui ; Vílchez Pérez, Miguel Angel ; Valmaseda Castellón, E. ; Gay Escoda, Cosme. Impacted lower third molars and distal caries in the mandibular second molar. Is prophylactic removal of lower third molars justified?. En: Journal of Clinical and Experimental Dentistry, 9 6 2017: 794-798, Recercat. Dipósit de la Recerca de Catalunya, instname, Dipòsit Digital de la UB, Universidad de Barcelona, RODERIC. Repositorio Institucional de la Universitat de Valéncia, Journal of Clinical and Experimental Dentistry
Accession number :
edsair.doi.dedup.....fa0f6def6547dc65816a05f92081f6de