نتایج جستجو برای: tooth root formation

تعداد نتایج: 734642  

2016
Bejoy J. Thomas A. Nishad Benin Paulaian Jonathan Emil Sam

Knowledge about the external and internal anatomy of the tooth is essential for successful dental practice. Anomalies in the tooth are often encountered which poses difficulties in dental treatments. As like any other tooth, mandibular first molars are also prone for anatomic malformations. One such anatomic variation is the presence of extra root distolingually. This distolingual root is calle...

2011

This case report describes the management of an oblique crown-root fracture of maxillary left lateral incisor. After removal of the fractured fragment, endodontic treatment, the remaining tooth was provisionally restored. The tooth was then orthodontically extruded by 3 mm to raise the defect supraginigivally. Periondonal fibres were cut with a surgical blade. A metallic screw type post was ins...

2011
Yun-Hoa Jung Bong-Hae Cho

PURPOSE The purpose of this study was to examine the patient- and treatment-related etiologic factors of external root resorption. MATERIALS AND METHODS This study consisted of 163 patients who had completed orthodontic treatments and taken the pre- and post-treatment panoramic and lateral cephalometric radiographs. The length of tooth was measured from the tooth apex to the incisal edge or c...

Journal: :The Journal of General Physiology 2003
Jacques Loeb

1. When leaves of Bryophyllum calycinum are suspended in moist air in a vertical plane and sidewise, roots and shoots are formed exclusively or predominate in the notches on the lower side of the leaves. When pieces of stems of the same plant are suspended horizontally in moist air, roots develop on the lower side of the stem, with the exception of the extreme basal end where they may develop o...

2011
PAUL V. ABBOTT

Teeth may require further management following root canal treatment because of persisting or new apical pathosis. Management must be based on the diagnosis of the presenting condition and the history of the previous treatment, particularly in relation to when it was completed. Most root-filled teeth with periapical pathosis should be re-treated in the first instance via a conventional orthograd...

Journal: :iranian endodontic journal 0
hengameh ashraf department of endodontics, shaheed beheshti medical university, tehran, iran golnaz momeni dental research center, shahid beheshti university of medical sciences, tehran, iran. nima moradi majd department of endodontics, dental school, qazvin university of medical sciences, qazvin, iran. hamed homayouni department of endodontics, dental school, qazvin university of medical sciences, qazvin, iran.

introduction : dentin removal during root canal instrumentation creates a weaker root structure and increases its potential to fracture. the aim of this in vitro experimental study was to compare fracture resistance of teeth filled with gutta-percha, and resilon using two different techniques. materials and methods: this study was performed on 105 single-canal extracted maxillary incisors. samp...

Journal: :iranian endodontic journal 0
roza haghgoo department of pedodontics, dental school, shahed university of medical sciences, tehran, iran farid abbasi department of oral medicine, dental school, shahed university of medical sciences, tehran, iran.

introduction: pulpotomy of carious primary teeth with an exposed pulp is a common treatment option. pulpotomy has been conducted with various medicaments over the years. the aim of this study was to evaluate clinical and radiographic success of primary vital pulpotomy with proroot and root mta. materials and methods: in this randomized clinical trial, children aged between 3-7 years who met the...

2014
P Varun Menon Rakesh Koshy Zachariah L K Surej Kumar Sherin A Khalam

Gemination or Schizodontism, a relatively uncommon dental anomaly, is characterized by a tooth with a bifid crown and a common root and root canal. It is commonly seen in primary dentition and gemination in a supernumerary tooth is a rare phenomenon. The purpose of this paper is to present an unusual case wherein gemination has occurred in a lingually placed mandibular supernumerary third premo...

2013
Sachin B. Mangalekar Tajammul Ahmed M. Zakirulla Halawar Sangmesh Shivappa F. B. Bheemappa Chandrashekar Yavagal

Mesiodens is a midline supernumerary tooth commonly seen in the maxillary arch, and incidence of molariform mesiodens in the maxillary midline is rare in permanent dentition and extremely uncommon in primary dentition. A midline supernumerary tooth in the primary dentition can cause ectopic or delayed eruption of permanent central incisors which will further alter occlusion and may compromise e...

Abbas Mohammadi EshaghAli Saberi Sediqe Ebrahimipour Sepideh Baniasadi

Background and Aim:Root canal preparation with rotary instruments may cause dentinal cracks leading to tooth fracture. The aim of this study was to compare three different rotary systems ProTaper, RaCe and Niti Tee on formation of dentinal cracks following root canal preparation. Materials and Methods: In this experimental study, 50 extracted mandibular first molars were selected. Teeth having ...

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