Evaluation of the Distortion Rate of Panoramic and Periapical Radiographs in Erupted Third Molar Inclination
نویسندگان
چکیده
BACKGROUND/OBJECTIVE Panoramic and periapical radiographs are normally used in impacted third molar teeth surgeries. The aim of the present study was to evaluate and compare the distortion of the erupted third molar teeth on panoramic and periapical radiographs. PATIENTS AND METHODS A total of 44 radiographs were obtained of 22 patients (age range, 18-24 years) referred to the faculty of dentistry for orthodontic treatment. A plaster cast was prepared and panoramic radiography was taken for all patients to plan the orthodontic treatment and periapical radiography was taken for investigation of tooth structure details. Therefore, a total of 66 views and samples were studied by two methods: 1) Measuring the angle between the longitudinal plane of the third molar and occlusal plane. 2) Measuring the angle between the longitudinal plane of second and third molar. Finally, 132 records were evaluated by one individual. RESULTS There was no significant statistical difference between the mean position of the third molar on panoramic, periapical radiographs and the casts. However, measurements of the third molars on periapical radiographs were slightly closer to the measurements of the casts compared to the panoramic radiographs. CONCLUSION Distortion does not have a specific effect on the diagnosis of the position of the third erupted molars by periapical or panoramic radiographs, though various studies have shown that these radiographs have an amount of distortion and periapical radiographical distortion is less than that in panoramic radiography.
منابع مشابه
میزان شیوع تحلیل سطح دیستال ریشههای مولر دوم مجاور مولر سوم نهفته با استفاده از رادیوگرافیهای پریاپیکال و پانورامیک
Background and Aims: Impacted third molar reduces the bone level in the distal aspect of second molar, and sometimes it can lead to root resorption of the adjacent tooth. The purpose of this study was to determine this resorption using panoramic and periapical radiographs. Materials and Methods: In this cross-sectional descriptive study 54 patient (28 men, 26 women) above 15 years old with ...
متن کاملComparison of the Inclination of Unerupted Mandibular Third Molars on Panoramic Radiography and Casts Made after Surgical Incision
BACKGROUND AND AIMS Panoramic radiographs are used for surgical planning of unerupted third molars. The major prob-lems associated with panoramic radiography include unequal magnification and geometric distortion of the image. The purpose of this study was the clinical evaluation of the effect of radiographic distortion on the position and classification of unerpted mandibular third molars. M...
متن کاملComparison of Different Imaging Techniques for the Evaluation of Proximity between Molars and the Mandibular Canal
Background and Aim: To compare the radiographic distance from the inferior part of mandibular second and third molars to the superior border of mandibular canal on radiographs obtained by conventional periapical radiographs, intraoral photostimulable phosphor plate (Intraoral PSP) and panoramic photostimulable phosphor plate (Panoramic PSP). Subjects and Methods: The study was carried out on 25...
متن کاملEvaluation of the Relationship between Mandibular Impacted Wisdom Teeth and Mandibular Canal in Preoperative Panoramic and Postoperative Complication
Background & Aims: Before the surgery of lower impacted third molars, it is essential to evaluate the relationship of the roots to mandibular canal using radiographies in order to avoid postoperative complications. The purpose of this study was to evaluate the reliability of panoramic radiographs in assessing this relationship. Methods: This was a prospective study. The study population consist...
متن کاملResearch Paper: Effect of asymptomatic erupted third molars on periodontal status and caries of adjacent second molars in Iranian population
Abstract Introduction: Third molars are the last teeth to grow and require more attention in the oral cavity because they can leave pathological effects. Considering the controversy clinical decisions about asymptomatic third molars, dentists’ lack of attention to over third molars developed during therapeutic recom-mendations for patients, and limited evidence about the effects of asympt...
متن کامل