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| Singh,Rajani; Srivastav,A. K. |
| Paralysis of the mental nerve is one of the principal complications of surgery of the mandibular canal and mental foramen region. Therefore, identification of mental foramen is important for dental surgeons in nerve block and surgical procedures like apico curettage of mandibular premolars, amalgam filling, peridental surgery etc. to avoid injury to neurovascular bundle. Accessory mental foramina tend to exist in the apical area of the first molar and posterior or inferior area of the mental foramen. The accessory branches of the mandibular canal showed common characteristics in the course of gently sloping posterosuperior direction in the buccal surface area. Verification of the existence of accessory mental foramina would prevent accessory nerve injury... |
| Tipo: Journal article |
Palavras-chave: Mental foramen; Accessory mental foramen; Mandible; Mental nerve; Premolar; Molar. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400025 |
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| Ferreira,Marília Alves; Hespanhol,Lucas Carneiro; Capote,Ticiana Sidorenko de Oliveira; Gonçalves,Marcela de Almeida; Campos,Juliana Álvares Duarte Bonini. |
| The purpose of this study was to assess the presence and the degree of expression of the molar tubercle according to sex, dentition and hemi-arches. Study casts of 126 patients were assessed, and those were under orthodontic treatment at the University of Franca, UNIFRAN; they were from both sexs, from 4 to 13 years old. The upper second primary molars and the upper first permanent molars, from both sides, were evaluated regarding the presence and the degree of expression of the molar tubercle. For an association study, the qui-square test was utilized. The concordance about the presence or absence of the molar tubercle according to dentition, hemi-arch and sex, was estimated by the Kappa Statistics. There was a sexual dimorphism concerning the... |
| Tipo: Journal article |
Palavras-chave: Molar; Tooth crown; Permanent dentition; Primary dentition. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100017 |
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| Jeremias,Fabiano; Santos-Pinto,Lourdes; Porciúncula,Hélio Ferraz. |
| The aim of this study was to analyze the relationship among the point of greatest depression on the root trifurcation floor and the furcation openings of the maxillary second molars. Sixty human extracted upper permanent second molars were analyzed and the furcation area were measured using a vertical calliper, and the values regarding the point of deepest depression were recorded. The results showed that the deepest depression in the trifurcation floor of the roots is centrally situated in 11.7% of the cases, whereas 88.3% involve mesial-buccal and distal-buccal roots. The distal furcation (F3) had the largest distance from the point of deepest depression in the trifurcation floor (A), followed by the buccal (F1) and mesial (F2) furcations when point A... |
| Tipo: Journal article |
Palavras-chave: Molar; Odontometry; Furcation. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300005 |
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| Sánchez Trocino,Benjamín; Díaz Acevedo,Jacinto Armando; Villanueva-Vilchis,Maria del Carmen; De la Fuente- Hernández,Javier; Sarmiento Rebolledo,Leonardo Daniel; Sánchez Amador,Alejandro Ricardo; López Tirado,Diego Iván. |
| Some dental treatments that are performed in the mandibular teeth involve manipulation of anatomical structures near the dental periapex, so it is likely to cause nerve damage due to the proximity of the inferior alveolar nerve with the apices of the mandibular teeth, mainly in the molar area. The aim of this study was to determine through Computed Tomography (CT) scan the existing distance between the mandibular canal and the anatomical structures adjacent to its path which will help to reduce the risk of injury to the inferior alveolar nerve during the different dental treatments developed in this zone. A cross-sectional study was performed where the study population consisted of 50 patients of both sexes, between 20 and 30 years with a full dentition... |
| Tipo: Journal article |
Palavras-chave: Mandibular Nerve; Molar; Third molar; Trigeminal nerve injuries; Cranial nerve injuries. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200030 |
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| Spalding,Marianne; Rezende,Karla Mayra; Silveira,Maria Claudia Garcia; Valera,Márcia Carneiro; Leite,Horácio Faig. |
| Knowledge on internal dental morphology is extremely important to the correct execution of the treatment and modeling of root canals. The aim of the present study was to analyze, "in vitro", the configuration of the canal system in the mesial root of 180 maxillary first molars obtained from a Brazilian sample. The teeth diaphanized in order to confirm the presence of the MB2 canal and to determine the internal anatomy. Only in 41 % of the teeth the orifice of MB2 canal emerged from the pulp chamber floor. Among teeth two apical foramina were found in 23.3 %, a single apical foramen was observed in 15,5 % and three apical foramina were present in 2,2 %. Considering the hole sample, the MB2 canal was observed in 65.4 %, merged with the MB1 or branching from... |
| Tipo: Journal article |
Palavras-chave: Molar; Root canal; Anatomy; Endodontics. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200012 |
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| Simões Libardi,Gustavo; Reis Percequillo,Alexandre. |
| There are several kinds of anomalies related to the teeth reported in mammals, and one of them is known as supernumerary teeth and is commonly noticed in the literature, being reported in nearly all orders of mammals. Here, we report the occurrence of supernumerary molars in the sigmodontine rodent Necromys lasiurus, a common and widespread small rodent of tribe Akodontini. In order to assess the patterns of morphometric variation of N. lasiurus in eastern South America, we examined the skulls of 1763 specimens. The supernumerary molars were found in 2 individuals, which represent a frequency of 0.11%. The origin of supernumerary teeth started a long discussion on tooth homology, whether this anomaly is a result of heredity, a mutation or an atavism.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Akodontini; Brazil; Development; Extra teeth; Molar; Premolar. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000200003 |
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