Results 291 to 300 of about 13,891,192 (336)

Six root canals in maxillary first molar

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 2009
In this clinical article we report an unusual anatomy that was detected in a maxillary first molar with 6 root canals. The possibility of 6 root canals in this tooth is quite small; however, it must be taken into account in clinical and radiographic evaluation during endodontic treatment. Many times their presence is noticed only after canal treatment,
Fábio, de Almeida-Gomes, Claudio, Maniglia-Ferreira, Bruno, Carvalho de Sousa, Roberto, Alves dos Santos   +3 more
openaire   +2 more sources

The Potential Attachment Area of the Maxillary First Molar

Journal of Periodontology, 1983
The assumption that the palatal (PAL) root of maxillary molars has significantly greater attachment area than either the mesiobuccal (MB) or the distobuccal (DB) root was tested by documenting the root surface area of the individual roots and root trunks of 20 extracted maxillary first molars.
D W, Hermann, M E, Gher, R M, Dunlap, G B, Pelleu   +3 more
openaire   +2 more sources

A five-canal maxillary first molar

Journal of Endodontics, 1984
A patient with a five-canal maxillary first molar wasreferred for endodontic treatment due to the mesiobuccal root which radiographically appeared to be calcified. Nonsurgical endodontic therapy revealed three root canals in the mesiobuccal are.
openaire   +2 more sources

Ankylosis of Maxillary Permanent First Molar

The Journal of the American Dental Association, 1980
A case of ankylosis of the maxillary right first permanent molar has been described. For 19 months, no change had been observed clinically or radiographically in the development of the tooth. A diagnosis of ankylosis of the unerupted tooth was made.
openaire   +2 more sources

The effect of maxillary first molar derotation on arch length

American Journal of Orthodontics and Dentofacial Orthopedics, 1997
In the correction of Class II malocclusions, derotation of the maxillary first molars is required to obtain an idealized Class I relation. Because of its trapezoidal shape, the maxillary first molar is believed to provide an arch length gain attendant to its derotation, which may subsequently be used to resolve deficiencies mesial to it.
S, Braun, B, Kusnoto, C A, Evans
openaire   +2 more sources

Submorphotypes of the maxillary first molar and their effects on alignment and rotation

American Journal of Orthodontics and Dentofacial Orthopedics, 2014
The aim of this study was to explore the shape differences in maxillary first molars with orthographic measurements using 3-dimensional virtual models to assess whether there is variability in morphology that could affect the alignment results when treated by straight-wire appliance systems.A total of 175 maxillary first molars with 4 cusps were ...
Hong-Kyun, Kim, Ho Beom, Kwon, Hong-Keun, Hyun, Min-Ho, Jung, Seong Ho, Han, Young-Seok, Park   +5 more
openaire   +2 more sources

Maxillary first molar with three palatal canals

Journal of Endodontics, 1991
A case report is presented involving the endodontic treatment of a maxillary first molar with an unusual morphological variation of the palatal root. The palatal root canal system was characterized by a single canal orifice, a trifurcation on the apical one third of the root and three separate foramina.
openaire   +2 more sources

A radiographic study of the position of the maxillary first molar

Oral Surgery, Oral Medicine, Oral Pathology, 1971
Abstract A study of Mongoloid and Caucasian subjects shows that cephalometric analysis can be applied to both groups and that the position of the upper permanent first molar is intimately connected with craniometric points. There is a tendency toward upper incisor protrusion in Mongoloids, and the data obtained for the established norms on the ...
openaire   +2 more sources

Endodontic therapy of an unusual maxillary permanent first molar

Journal of Endodontics, 1983
A case of endodontic treatment of a maxillary first molar, presumably fused with a maxillary second premolar, is presented.
A, Stabholz, S, Friedman
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Bilateral C shape configuration in maxillary first molars

Journal of Endodontics, 1990
The C-shaped canal is unusual. It is most frequently reported in mandibular molars. A case of bilateral C-shaped canals in maxillary molars is reported here.
E, Dankner, S, Friedman, A, Stabholz
openaire   +2 more sources