Examinando por Materia "Terceras molares inferiores"

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(Universidad Privada Norbert Wiener, 2018-08-20) Martinez Izo, Vanessa Liliana; Vilchez Bellido, Dina
The objective of this study was to determine the frequency of dental caries on the distal side of second molars adjacent to third molars in panoramic radiographs from a private dental clinic in the Surco district of Lima in 2016. This was a descriptive, observational, retrospective, and cross-sectional study. The sample consisted of 116 panoramic radiographs showing 176 lower third molars. The variables considered were dental caries on the distal side of the mandibular second molar, the angulation of the lower third molar (Shiller Classification), the impaction level of the lower third molar (Pell and Gregory Classification), and the distances between the cement-enamel junction of the distal second mandibular molar and the mesial third mandibular molar (Leone Classification), along with age and sex. Frequency analysis was performed. Results: The frequency of distal caries on the second molar adjacent to the lower third molar was 41%. This frequency was higher in males (24%) and in the age range of 20 to 29 years (18%). Distal caries on second molars occurred more frequently adjacent to lower third molars with a mesial angulation between 51° and 73° (11%), a level C impaction (16%), and when the distance between the cement-enamel junction of the distal second molar and the mesial of the lower third molar was between 8 and 10 mm (23%). A higher frequency of second molars adjacent to the lower third molar had no dental caries.
Acceso abierto

(Universidad Privada Norbert Wiener, 2017) Chávez Huaromo, Nilo Leonardo; Galvez Ramirez, Carlos Michell
The objective of this research was to determine the location of the lower third molars according to the Winter classification and the Pell and Gregory classification in panoramic radiographs of patients aged 18 to 50 from the Dental Clinic of the Universidad Privada Norbert Wiener, Lima, 2017. A total of 101 panoramic radiographs of patients aged 18 to 50 from the years 2012-2014 were used; both lower third molars were taken from each panoramic radiograph, and the Winter and Pell – Gregory classifications were applied. Results: The most prevalent location of lower third molars according to the Winter classification was horizontal with 66.3%, mesioangular with 18.8%, and vertical with 12.9%. The location of the lower third molars according to the Winter classification and age group showed that in all three age groups, horizontal, mesioangular, and vertical positions were the most prevalent, respectively. Conclusions: According to the Winter classification, the most prevalent positions were horizontal, mesioangular, and vertical, while according to the Pell and Gregory classification, it was IIB, followed by IB. It was also determined that these positions were the most frequent in both genders and age groups.