نتایج جستجو برای: molars

تعداد نتایج: 8125  

Journal: :Cumhuriyet Dental Journal 2021

Background and aim: This study evaluated the rates of second molars undergoing endodontic treatment due to partially or fully erupted lower upper third molars. 
 Materials Methods: Radiographic data from 579 patients were analyzed calculate other reasons. Descriptive statistics expressed as numbers percentages for categorical variables. The chi-square test was used determine relationships ...

Background and Aim: It is essential to know the internal root canal anatomy to reach a successful root canal debridement and a subsequent successful root canal obturation. Due to the importance of knowing the complexity of mid-mesial (MM) canals and isthmuses and how to deal with these anatomic variations, in this study, we examined the incidence and prevalence of the MM canal and isthmuses in ...

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2000
T J Bussick J A McNamara

The purpose of the study was to examine the dentoalveolar and skeletal effects of the pendulum appliance in Class II patients at varying stages of dental development and with varying facial patterns (high, neutral, and low mandibular plane angles). Specifically, the amount and nature of the "distalization" of the maxillary first molars and the reciprocal effects on the anchoring maxillary first...

2014
Alberto Caprioglio Mauro Cozzani Mattia Fontana

BACKGROUND There are controversial opinions about the effect of erupted second molars on distalization of the first molars. Most of the distalizing devices are anchored on the first molars, without including second molars; so, differences between sequentially distalize maxillary molars (second molar followed by the first molar) or distalize second and first molars together are not clear. The ai...

2017
Shefali Wadhwani Mahesh Pratap Singh Manish Agarwal Pavithra Somasundaram Manjusha Rawtiya P. K. Wadhwani

Introduction To evaluate the prevalence of C-shaped root canals in mandibular molars using cone beam computed tomography (CBCT) in a subpopulation of Central India. Materials and Methods CBCT scans of patients from diagnostic imaging center were selected in accordance with the criteria given by Fan et al. (2004) for C-shaped canals. A total of 238 CBCT scans fulfilled the inclusion criteria a...

Journal: :Pediatric dentistry 1998
T J Gale C M Hanes D R Myers C M Russell

PURPOSE The purpose of this study was to assess the performance of sealants placed by senior dental students as part of a comprehensive dental care program that included periodic patient recall. METHODS The dental records of 100 patients ranging in age from 6 to 13 years were selected for review to determine the treatments provided for first permanent molars over time. Criteria for inclusion ...

Journal: :Medicina oral, patologia oral y cirugia bucal 2011
Cihan Bereket Nilüfer Çakir-Özkan Ismail Şener Isa Kara Ali-Murat Aktan Nursel Arici

OBJECTIVES The purpose of the present study was to retrospectively analyze 170 case series of patients with 200 impacted first and second permanent molars. STUDY DESIGN Records of 104.408 patients were retrospectively screened in this multicenter study. The chosen study population consists of 170 patients who presented with impacted or retained first and second permanent molar. All patients w...

Journal: :British journal of orthodontics 1998
N W Harradine M H Pearson B Toth

The problem of late mandibular incisor crowding is a well established phenomenon, the cause of which has been the substance of considerable debate over the years. A central issue is the possible role of the third molars though no definitive conclusions have been consistently drawn. This prospective study was designed to investigate the effects of randomly assigned early extraction of third mola...

2009
L.A Gonçalves S.C Boldrini T.S.O Capote C.B Binotti R.A Azeredo D.T Martini B Rosenberg W.G Bautz E.A Liberti

The effects of protein malnutrition, both in utero and prior to weaning, on formation of the first mandibular molars were evaluated by phase-contrast and electron microscopy in rats. The nourished group (GI) received a diet that included 20% casein, while the malnourished group (GII) received 5% casein. The first mandibular molars from GII exhibited low density of cells and odontoblasts, which ...

2015
Shishir Singh Mansing Pawar

OBJECTIVE The objective was to study the root canal morphology of South Asian Indian Maxillary molars using a tooth clearing technique. MATERIALS AND METHODS Hundred teeth each comprising of first, second, and third molars collected from different dental schools and clinics in India were subjected to standard dye penetration, decalcification and clearing procedure before being studied. RESU...

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