نتایج جستجو برای: human extracted molars

تعداد نتایج: 1766142  

Journal: :Brazilian dental journal 2012
Danilo Zaparolli Paulo César Saquy Antonio Miranda Cruz-Filho

The aim of this study was to evaluate the effect of irrigation regimens on dentin microhardness at the furcation area of mandibular molars, using sodium hypochlorite and ethylenediaminetetraacetic acid (EDTA), individually and in alternation. The occlusal surface and the roots of 20 non-carious extracted human permanent mandibular molars were cut transversally and discarded. The tooth blocks we...

2016
Hadi Mokhtari Mahdi Niknami Hamid Reza Mokhtari Zonouzi Aydin Sohrabi Negin Ghasemi Amir Akbari Golzar

INTRODUCTION The aim of the present in vitro study was to compare the accuracy of cone-beam computed tomography (CBCT) in determining root canal morphology of mandibular first molars in comparison with staining and clearing technique. METHODS AND MATERIALS CBCT images were taken from 96 extracted human mandibular first molars and the teeth were then evaluated based on Vertucci's classificatio...

Journal: :Archives of oral and maxillofacial surgery 2022

Abstract Objective: This study evaluates the role of oral sedation, using 5 mg diazepam, on postoperative sequelae (Pain, trismus and swelling) following impacted mandibular third molar surgery. Materials methods: is a randomised control involving 100 patients whose anxiety levels were assessed with Modified Dental Anxiety Scale (MDAS) just before drug administration thirty minutes after admini...

2010
Natalino Lourenço Neto Marco A.B. Paschoal Tatiana Y. Kobayashi Daniela Rios Salete M.B. Silva

Amelogenesis imperfecta (AI) is an inherited disorder which results in enamel defects. The main clinical characteristics are extensive loss of tooth tissue, poor esthetics and tooth sensitivity. Early recognition followed by appropriate preventive care and oral rehabilitation is essential in the successful management of AI. This clinical report describes the management of a 3 year-old girl with...

Journal: :Brazilian dental journal 2010
Ana Helena Gonçalves de Alencar Paul M H Dummer Henrique César Marçal Oliveira Jesus Djalma Pécora Carlos Estrela

This study detected procedural errors created by rotary nickel-titanium (NiTi) instruments during root canal preparation by two imaging methods. Forty extracted human maxillary and mandibular molars were divided randomly into two groups and treated by two endodontists (n=10) and two undergraduate dental students (n=10). The ProTaper Universal Rotary System was used to shape the canals and then ...

2012
Benjamín Morales-Trejo Miriam L. Rocha-Navarro Anselmo L. Acosta-Veloz Angélica Juárez-Hernández

OBJECTIVE To investigate the class, type, position, diagnosis and most common procedures used in the surgical removal of third molars, and evaluate the sex and age distribution in a representative sample of Mexican patients. STUDY DESIGN A retrospective descriptive study was made covering the period 1993-2008 in relation to 9148 extracted third molars in 3206 patients treated in the Dental Sc...

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 ...

Journal: :Journal of oral rehabilitation 2008
F Wegehaupt D Gries A Wiegand T Attin

The study aimed to compare the dentine wear of primary and permanent human and bovine teeth because of erosion/abrasion and evaluate if bovine dentine is an appropriate substitute for human dentine in further erosion/abrasions tests. Dentine samples from deciduous molars and human third molars as well as from calves' and cattle's lower incisors were prepared and baseline surface profiles were r...

Journal: :Pediatric dentistry 2004
Apostole P Vanderas Katerina Kavvadia Lisa Papagiannoulis

PURPOSE This study investigated the effect of the primary second molars' distal surface caries on the incidence of the permanent first molars' mesial surface caries in 613 paired tooth surfaces of children ages 6 to 8 years at baseline examination. METHODS Proximal caries and its progression were diagnosed by bite-wing radiographs taken at a 1-year interval over a period of 4 years. The perma...

Journal: :European journal of orthodontics 1998
J M Battagel A Ryan

The aim of this retrospective study was to examine the dental changes which occurred during buccal segment retraction in 39 subjects considered suitable for treatment with headgear to the maxillary dentition. Initially, a removable en masse appliance was fitted to distalize the buccal segments. Once the molar relationship was corrected, fixed appliances were placed for upper arch consolidation ...

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