Primary retention of first permanent mandibular molars in 29 subjects
نویسندگان
چکیده
منابع مشابه
Consequences of the Loss of Mandibular First Permanent Molars
During the mixed-dentition stage of dental development, dentists may encounter patients with first permanent molars considered to have a poor long-term prognosis. In this situation, extraction of the tooth and space closure or use of the extraction space for future orthodontic treatment should be considered. The aim of this article is to give guidelines about treatment planning for patients who...
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The purpose of this study was firstly to characterize the changes occurring in size and form of the mineralizing maxillary second primary molar and first permanent molar crowns, and secondly to determine if similar changes in size and form characterize enamel apposition in the crowns of these teeth. Twenty-five primary second molars and 20 maxillary permanent first molars at various stages of d...
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BACKGROUND AND AIM: It is required in many young patients that permanent first molars (PFMs) be extracted due to poor prognosis. This study investigates whether the extraction of such teeth is effective on the development of third molars and even their crown and root morphologies.METHODS: A total of 7000 panoramic radiographs were evaluated and 128 radiographs showing a history of extraction of...
متن کاملprevalence of extra roots in permanent mandibular first molars in iranian population: a cbct analysis
introduction: having knowledge about the anatomy of root canal system is essential for success of endodontic treatment. the present study used cone-beam computed tomography (cbct), to evaluate the prevalence of third root in mandibular first molars in a selected iranian population. methods and materials: a total of 386 cbct images from subjects referred to oral and maxillofacial radiology depar...
متن کاملPrevalence of Extra Roots in Permanent Mandibular First Molars in Iranian Population: A CBCT Analysis
INTRODUCTION Having knowledge about the anatomy of root canal system is essential for success of endodontic treatment. The present study used cone-beam computed tomography (CBCT), to evaluate the prevalence of third root in mandibular first molars in a selected Iranian population. METHODS AND MATERIALS A total of 386 CBCT images from subjects referred to oral and maxillofacial radiology depar...
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ژورنال
عنوان ژورنال: The European Journal of Orthodontics
سال: 2006
ISSN: 0141-5387,1460-2210
DOI: 10.1093/ejo/cjl049