Examinando por Materia "Molar impaction"

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Acceso abierto
Characterisation of the impact of permanent mandibular second molars in patients attended at the dental technical clinic of the Juan Pablo II Private University, Lima - Peru 2017
(Universidad Privada Norbert Wiener, 2019-01-24) Aliaga Rojas, John Jesús; Ascanoa Olazo, Jimmy Antonio
This research determined the characterization of the impaction of permanent mandibular second molars in patients treated at the dental teaching clinic of the Universidad Privada Juan Pablo II in 2017. Materials and Methods: This was an observational study with a descriptive, cross-sectional design and a retrospective type. A total of 200 panoramic radiographs of patients over 15 years of age, of both genders, treated in 2017, were used. The representative sample consisted of 111 panoramic radiographs. Data collection and statistical analysis were performed using SPSS version 21.0. Results: The frequency of impaction of permanent mandibular second molars was 9.9%. The radiographic angulation according to the Occlusal Plane Angle (APO) was 130.64 ± 10.337; the Interplanar Occlusal Angle (AIP) was 42.91 ± 6.503, while the Intermolar Angle (AIM) was 34.91 ± 6.348. The impaction inclination of the mandibular second molars was mesioangular, and radiographic pathologies of adjacent structures to the impacted second molars were observed. Bone defects were found in 18.21% of cases, and carious lesions also accounted for 18.21%. The gender with the highest impaction frequency was male, with 54.5%, while female accounted for only 45.5%. The most impacted mandibular side was the right, with 72.7% (8), while the left had 27.3% (3). Conclusion: The prevalence of impaction of permanent mandibular second molars is low.
Acceso abierto
Impaction of the lower third molars and its relationship with the space available for eruption in patients treated in a dental center, Lima 2021
(Universidad Privada Norbert Wiener, 2023-10-09) Zevallos Vivas, Karina Beatriz; Jaime Okumura, Roberto
Objective: To analyze the association between the impaction of lower third molars and the available space for eruption in patients treated at a dental center in Lima, 2021. Material and Methods: A basic, correlational, and cross-sectional study was conducted. A total of 165 panoramic radiographs were used, and a Chi-square statistical test was performed. Results: Regarding the available space, it was observed that 56.4% of the cases had a 70% probability of eruption, and 43.6% had a 30% probability of eruption. For the impaction of lower third molars according to the ascending ramus and available space, the most frequent was Class II at 75.3%, with a 70% probability of eruption, 14.0% for Class I with a 70% probability of eruption, and 25.0% for Class III with a 30% probability of eruption. Regarding the position of the mandibular third molars and available space, the frequency observed for the mesioangular position was 75.3% with a 70% probability of eruption, for the vertical position 19.4% with a 70% probability of eruption, and for the horizontal position 19.4% with a 30% probability of eruption. Finally, regarding relative depth and available space, the most frequent level was Level B at 72.0% with a 70% probability of eruption, followed by Level A at 25.8% with a 70% probability of eruption, and Level C at 5.6% with a 30% probability of eruption. Conclusions: The study variables establish a significant relationship between the impaction of lower third molars and available space.