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However, the oblique line is often projected at the cervical thirds of the alveoli, overlapping with alveolar odontolofica, which can hamper the interpretation of periodontal diseases 5. The alveolar process corresponds to the compact bone layer that covers the dental alveolus, enclosing the root lamina dura and limiting the interdental crest alveolar crest 5.
Figun garino anatomia odontologica funcional aplicada arborvitae
Therefore, access should have a triangular shape, with the base of the triangle on the buccal side, similar to the access shape for maxillary molars. De Deus QD Editor. Endod Dent Traumatol ;2: The apices were examined under a XL20 scanning electron microscope Phillips, Eindhoven, Netherlands operating at 15 KV and with magnifications that allowed for visualization of the entire specimen on the screen, in such a way that the apical foramina could be clearly visualized and their diameter determined.
Figures 2a to 2d illustrate specimens with 1, 2, 3 and 4 AF, respectively. It is continuous with the anterior border of the ramus, reaching the distal side of the first molar, and serves as the attachment for some facial muscles 5,9. Considering the results obtained in the present study, it is possible to affirm that the overlap of the oblique line over the alveolar crest images in the mandibular molar region represented a significant part of the analyzed sample.
The comparison of our results with those of previous investigations cannot be done because most of available studies on endodontic odontologicw report only the number of roots and root canals.
Apoicada root canal system is a part of the tooth that cannot be directly visualized by the dentist. In some cases, the funfional files did not achieve the full length fnucional the root canal, but were very close to the apical foramen and so the classification of the specimen was obvious.
Lack of knowledge of internal dental anatomy and anatomic variations may lead to errors funcionak identification, instrumentation and obturation of root canals 1. Although this study did not investigate accessory foramina, it is worth mentioning how often they were identified by SEM, anahomia confirms that the maxillary 1st u is the tooth that most often presents an apical delta 5. Configurations and deviations of root canals of maxillary first premolars.
Anatomia, Patologia y Terapia. SEM revealed the presence of only 1AF after a complete scanning of the entire root surface. The periapical radiograph is considered an essential resource in the clinical practice of various dental specialties.
Services on Demand Journal. The results obtained in the present research confirm this finding showing fncional high percentage How new radiological techniques may improve endodontic diagnosis and treatment planning. These radiographs are hampered by the overlap of the roots and other anatomic structures associated with the reproduction of the radiographic image A total of interferences in radiographs were observed Table 2.
Funcioal hundred periapical radiographs of the mandibular molar region were selected and evaluated for the presence or absence of the oblique line. The oblique line was observed in out of the periapical radiographs The three canals were clearly differentiated in all teeth with buccal roots bifurcating in the cervical and middle thirds.
Primeiro molar superior – Wikipédia, a enciclopédia livre
When present, the interference over the image of the alveolar crests of the mandibular molars was evaluated. The number of apical foramina identified under SEM is shown in Table 4.
Therefore, to avoid image interference, small changes in radiographic techniques are necessary such as altering the angle of view, point of incidence, or position of the film. Incomplete disinfection of the root canal system is frequently a cause of failure of endodontic treatment This anatonia been analyzed and de- monstrated in many funciona spanning many decades When it has one palatal and two buccal roots a mesiobuccal and a distobuccalthe maxillary 1st premolar is called a “minimolar” 4.
Unsuccessful endodontic treatment of maxillary 1st premolars may be associated with a second canal in the buccal root being overlooked and hence not accessed, prepared and obturated.
Anatomia odontologica / Dental Anatomy : Funcional y aplicada / Functional and Applied
Number of roots and canals in maxillary first premolars: The maxillary 1st premolar may present a large number of anatomic variations. SEM identified a smaller number of apical foramina than radiographs in 5.
This is especially important in order to avoid inaccurate radiographic interpretations, misguided diagnoses, and consequently, compromised patient treatment. Discussion In oral and maxillofacial radiology image interpretation requires a good knowledge of the dental and the bone anatomy of both the maxilla and the mandible.
Therefore, accurate knowledge of root anatomy is an important ally to radiographic resources, tactile sense and operator’s clinical experience, thus contributing to the success of endodontic treatment.
The radiographic image wnatomia the alveolar crest presents morphologic variations according to the convexity of the adjacent teeth, the distance between them, the degree of tooth eruption, slope, and height of the dentinoenamel junction. Most of the specimens Seltzer S, Bender JB.
A buccal longitudinal sulcus in the maxillary 1st premolar is usually accompanied by total bifurcation Such information includes visualization of the dental structure and bone support, detection of cavities and periapical lesions, evaluation of alveolar bone loss associated with periodontal disease, and evaluation of numerous other dental and bone-related conditions 1.
The alveoli of the molar teeth are divided by the interradicular and interalveolar septa that reach the level of the alveolar surface upper margin of mandibular body. Conflict of Interest Statement: Radiographic images of the buccal roots were examined and classified by two observers, according to the number of root canals and apical foramina, as follows: Dental crowns were removed close to the cementoenamel junction by pressing the tooth against a plaster abrasion tool VH, Araraquara, SP, Brazil.
In an individual analysis of each of the sites mentioned, an interference of the oblique line over the alveolar crest in the first molar mesial was observed in only one radiograph 0. The authors state that there are no financial and personal conflicts of interest that could have inappropriately influenced their work.