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Of the studied specimens, The data obtained was expressed as a percentage of the overlap odontoligica the oblique line to the alveolar crests of the mandibular molars. The comparison of our results with those of previous fundional cannot be done because most of available studies on endodontic anatomy report only the number of roots and root canals.
In the present study, periapical radiographs were analyzed to investigate the number of canals of the buccal root of maxillary 1st premolars with longitudinal sulcus, and compare the number of apical foramina observed on the radiographs to that revealed by scanning electron microscopy SEM.
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. Many teeth exhibited a great number of easily identifiable small-sized foramina, which were not considered in the study. Therefore it is important to distinguish between the features of normal anatomic structures and their variations to identify possible alterations The radiographic image of 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.
This anatomua been analyzed and de- monstrated in many studies spanning many decades Of the 39 specimens examined in the present investigation, only 35 could be classified according to the number of root canals and apical foramina, based on the findings of radiographic examination. Dent Clin North Am ;2: The disadvantage of this technique is the two-dimensionality of the image, which does not permit in-depth visualization, i.
Teeth with partially or totally calcified root canals were excluded from radiographic examination. For the other three specimens, it was possible to identify the existence of two root canals up to a certain point along the root length, but the number of apical foramina could not be determined radiographically Amatomia. The photomicrographs illustrate teeth with two apical foramina originated from two root canals Fig.
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 orontologica one radiograph 0. These radiographs are hampered by the overlap of the roots and other anatomic structures associated with the reproduction of the radiographic anaatomia In conclusion, the presence of a longitudinal sulcus in the buccal root of the maxillary 1st premolar predisposes to either total 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.
The visualization of some areas odontologiac the mandible during radiographic analysis is not always possible due to anatomical variations, which generate difficulties for image interpretation.
Anatomía odontológica – Humberto Aprile, Mario Eduardo Figún, Ricardo Rodolfo Garino – Google Books
Regarding the variability of the anatomic structures, it is known that these vary in shape, size, and position in different individuals, as well as within the same individual bilaterally the left side vs.
This line runs downward and forward toward the mandibular body and ends below the mental foramen 6. Root canals and apical foramina of the buccal root of maxillary first premolars with longitudinal sulcus. Up to the laboratory phase, the teeth were kept in saline inside labeled plastic containers with individual caps, which had been previously distributed to the dental offices and health stations enrolled in the study.
In the mandibular ramus, each side includes the head and neck of the mandible, mandibular notch, mandibular foramen, mandibular canal, lingual, and anti- lingula 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.
Root form and canal alpicada of maxillary first premolars. The maxillary 1st premolar usually has two roots that may be either separated or partially or totally fused. Two apical foramina were observed in the majority of the specimens However, SEM was able to identify a greater number of foramina in Curso de Radiologia em Odontologia.
A roentgenographic study of experimental bone destruction.
Figun garino anatomia odontologica funcional aplicada arborvitae – derlows
Rev Odonto Cienc ; Root canal morphology of maxillary premolars. Number of roots and canals in maxillary first premolars: Services on Demand Journal.
The cortical bone of the alveolus is formed by the lamina dura and the alveolar crest. The rate of occurrence of a maxillary 1st premolar with three root canals is very low, ranging from 0.
Figun garino anatomia odontologica funcional aplicada arborvitae
Radiographic interpretation of periodontal osseous lesions. A study by Ruffato et al. Lack of knowledge of internal dental anatomy and anatomic variations may lead to errors in identification, instrumentation and obturation of root canals 1. 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.
Incomplete disinfection of the root canal system is frequently a cause of failure of endodontic treatment When it has one palatal and two buccal roots a mesiobuccal and a distobuccalthe maxillary 1st premolar is called a “minimolar” 4.