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Such modifications can enable a more precise radiographic analysis of the region Braz Dent J ;2: The periapical radiograph is commonly used in dental practice 11although sophisticated imaging resources used to complement the diagnosis of oral alterations, such as digital radiographs and cone-beam computed tomography, are now available. The number of apical foramina identified under SEM is shown in Table 4.

Radiographically, the oblique line is seen as a highly radiopaque line found in the area of the mandibular molars traversing the last two molars at the level of the middle third of the root 5,7. Root canal anatomy of the human permanent teeth.

Some classic studies on internal dental anatomy 2,3 have provided important data for better understanding of Endodontics, thus contributing to the success of root canal therapy. Results The obtained results showed that the oblique line was detected in radiographs, representing 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.

The observers classified the specimens as having 1, 2, 3 or 4 AF.

Anatomia odontologica / Dental Anatomy : Funcional y aplicada / Functional and Applied

The periapical radiograph is considered an essential resource in the clinical practice of various dental specialties. Thirty-nine human maxillary 1st premolars with fully developed roots, no root fractures and a longitudinal sulcus on the buccal surface of the buccal root were selected. The results of this study are relevant because the aatomia imaging method is widely reported in the literature for investigation of internal dental anatomy Of the studied specimens, These findings confirm that maxillary 1st premolars with 2 root canals are similar to the maxillary 1st molars.

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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. Root form and canal anatomy of maxillary first premolars. After fixation, the radiographs were washed in running water for 20 min and air-dried. Therefore, these radiographic elements become anatomai to the odobtologica diagnosis of periodontal disease.

The findings of this study also revealed that the apical portion of the fgun root of maxillary 1st premolars is extremely thin.

However, the oblique line is often projected at the cervical thirds of the alveoli, overlapping with alveolar crests, which can hamper the interpretation of periodontal diseases 5. When it has one palatal and two buccal roots a mesiobuccal and a distobuccalthe maxillary 1st premolar is called a “minimolar” 4. A well-done radiographic projection in periapical impact assessment makes it possible to evaluate the position of the marginal alveolar bone as well as the bone destruction patterns of periodontal disease.

It was not possible to access the canals and hence the AF in only one specimen. This has been analyzed and de- monstrated in many studies spanning many decades The objective of the present research was to identify and quantify the frequency of the oblique line projection over the alveolar crests of the mandibular molars in periapical radiographs.

The results obtained in the present research confirm this finding showing a high percentage Table 2 shows the number of root canals in the maxillary 1st premolar as described in several studies 1,as well as the number of specimens and technique used.

Seltzer S, Bender JB. The comparison of our results with those of previous investigations cannot be done because most of available studies on endodontic anatomy report only the number of roots and root canals. Willian Wood and Co; De Deus QD Editor.

Primeiro molar superior

The rate of occurrence of a maxillary 1st premolar with three root canals is very low, ranging odobtologica 0. Endod Dent Traumatol ;2: In addition, this change in the technique reduces the possible interference or overlap of the oblique line over anatomic structures. Initially, the simple presence or absence of an oblique line was assessed.


Many teeth exhibited a great number of easily identifiable small-sized foramina, which were not considered in the study. This is especially important in order to avoid inaccurate radiographic interpretations, misguided diagnoses, and consequently, compromised patient treatment. As far as we could ascertain, only one study 16 has described anatomix presence of sulcus or bifurcation in the roots of maxillary 1st premolars as a variation of the internal anatomy.

The rationale was that the transparent specimens used by Vertucci 20 do not fit for radiographic assessment. A buccal longitudinal sulcus in the maxillary 1st premolar is usually accompanied by total bifurcation The three canals were clearly differentiated in all teeth with buccal roots bifurcating in the cervical and middle thirds. anattomia

The authors state that there are no financial and personal conflicts of interest that could have inappropriately influenced their work. Although these teeth have 2 buccal roots, they frequently have 3 canals – one in the distobuccal root and two in funcionnal mesiobuccal root the mesiobuccal and the mesiolingual canals.

Anatomía Odontológica – Humberto Aprile, Mario Edouardo Figún – Google Books

The evolution and application of the funcionall maxillofacial imaging modalities. Better prognoses in endodontic treatment can only be achieved if dentists have thorough knowledge of the internal anatomic configuration of teeth.

Anatomia, Patologia y Terapia.

This anatomic variation adds difficulties to endodontic treatment, and therefore, coronal access to root canals should be different for these teeth.