نتایج جستجو برای: fourth molars

تعداد نتایج: 72928  

Journal: :Pediatric dentistry 2000
N S Farooq J A Coll A Kuwabara P Shelton

PURPOSE This study was performed to retrospectively evaluate treatment of deep caries in primary molars with formocresol pulpotomy (FP) and indirect pulp therapy (IPT). METHODS 133 primary molars with deep caries approaching the pulp were treated with FP (N = 78) or IPT (N = 55) and followed 2-7 years. All IPTs received immediate stainless steel crowns (SSCs); 61 FPs got an immediate SSC, 13 ...

2016
Pedro Augusto Oliveira Santos Xambre Claudia Scigliano Valerio Claudia Assunção e Alves Cardoso Antônio Luís Neto Custódio Flávio Ricardo Manzi

PURPOSE In the present study, we coined the term 'alveolar dome' and aimed to demonstrate the prevalence of alveolar domes through digital periapical radiographs. MATERIALS AND METHODS This study examined 800 digital periapical radiographs in regard to the presence of alveolar domes. The periapical radiographs were acquired by a digital system using a photostimulable phosphor (PSP) plate. The...

2013
Naohiro Nakasone Kohei Ishida Tomoko Yokoyama Moe Okada Yasutaka Komatsu Hiromasa Yoshie

Occlusion is commenced by contact of a tooth with an opposing tooth and is the mechanical force working against the periodontal ligament (PDL). Our recent study indicated that occlusion regulated tooth-root elongation occurs during root development in rat molars. Using a non-occlusal model established to directly examine the effects of the absence of occlusion in developing first molars of uppe...

Journal: :European journal of orthodontics 2008
Krister Bjerklin Midea Al-Najjar Henrik Kårestedt Anders Andrén

In subjects with agenesis of the second mandibular premolar teeth, the primary molar may be left in situ. The long-term prognosis of a retained primary molar has not been established in any study that included large number of patients. The aim of this investigation was to monitor the survival of retained mandibular second primary molars, from 12-13 years of age to adulthood. The material compri...

2010

Some food characteristics, like stickiness and consistency, can modify the time for food removal from the mouth as well as favors the activity of cariogenic bacteria, increasing dental caries risk. This study aimed to observe food retention in contact with a cariogenic substrate in 24-30 months old children. Therefore, 27 children (54 teeth) were evaluated. They intake a chocolate cookie and th...

Journal: :Journal of dentistry 2011
Cristina Cardoso-Silva Elena Barbería Myriam Maroto Franklin García-Godoy

OBJECTIVES The aim of the present study was to conduct a clinical and radiographic long-term evaluation of pulpotomy in temporary molars performed with Grey and White Mineral Trioxide Aggregate (MTA) and compare the results of Grey and White MTA pulpotomies in a sample of 233 primary molars with a maximum follow-up period of 84 months. METHODS The sample was selected from patients treated at ...

2017
José Marques Marta Montserrat-Bosch Rui Figueiredo Miguel-Angel Vilchez-Pérez Eduard Valmaseda-Castellón Cosme Gay-Escoda

BACKGROUND The objective of this study was to evaluate the association between the presence of mandibular third molars and the occurrence of carious lesions in the distal aspect of the mandibular second molar. MATERIAL AND METHODS A retrospective cohort study comprising 327 lower third molars extracted in the Oral Surgery and Implantology Master's Degree program of the School of Dentistry of ...

2016
Weeraya Tantanapornkul Darika Mavin Jaruthai Prapaiphittayakun Natnicha Phipatboonyarat Wanchanok Julphantong

BACKGROUND The relationship between impacted mandibular third molar and mandibular canal is important for removal of this tooth. Panoramic radiography is one of the commonly used diagnostic tools for evaluating the relationship of these two structures. OBJECTIVES To evaluate the accuracy of panoramic radiographic findings in predicting direct contact between mandibular canal and impacted thir...

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 ...

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