AN IN VITRO EVALUATION OF ROOT ANATOMY, DETECTION OF APICAL FORAMEN AND APICAL CONSTRICTION IN HUMAN MANDIBULAR PREMOLAR TEETH

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SAFI L.; PARDIS S.; KHALILI F.

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Journal: JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES) Year:2006 | Volume:6 | Issue:3-4 (11) Page(s): 47-56

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Title

AN IN VITRO EVALUATION OF ROOT ANATOMY, DETECTION OF APICAL FORAMEN AND APICAL CONSTRICTION IN HUMAN MANDIBULAR PREMOLAR TEETH

Author(s)

SAFI L. | PARDIS S. | KHALILI F. | Issue Writer Certificate

Keywords

ROOT CANAL ANATOMYQ3

APICAL FORAMENQ3

APICAL CONSTRICTIONQ3

Abstract

Statement of Problem: Complete knowledge of the morphologic and microscopic anatomy of the dental root apex has been recognized. Internal ROOT CANAL ANATOMY especially root apex is variable in human teeth for example lateral canal and ramification may exist.Purpose: The objective of this study was to determine the internal anatomy of root apex. Materials and Method: For this investigation, 50 mandibular first premolar and 50 mandibular second premolar were obtained. The age and sex of the patients and reasons for extraction were not recorded. For better recognition of APICAL FORAMEN and lateral foramen of the teeth, they were placed in methylen blue for 2 hours and then teeth were studied under the stereomicroscope with ×25 magnification lens (the calibration of lens was 0.1mm) and percentage of lateral canal, root deviator and APICAL FORAMEN exit were detected. Then, to study the internal anatomy, the teeth were grinded and stained with hematoxylin. The mean, standard deviation and standard error for the diameter of constriction and distance from APICAL FORAMEN were measured. Also, the internal anatomy of the root canal was studied by two observers.Results: The results showed that APICAL CONSTRICTIONs were always smaller than APICAL FORAMEN and a distance existed between APICAL CONSTRICTIONs, APICAL FORAMEN and vertex. APICAL FORAMEN did not exist in center in 80 to 90% of cases. Lateral canals were observed in 28% of mandibular first premolar and in 34% of mandibular second premolar. Also, 90% of first premolar teeth and 88% of second premolar teeth had one canal and 10% of first premolar and 12% of second premolar had two canals.Conclusion: As the mean distance between APICAL CONSTRICTION and apical vertex in mandibular first premolars was 0.65mm and in mandibular second premolars was 0.68mm, therefore during root canal treatment and working length determination, these distances should be decreased from tooth length.

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APA: Copy

SAFI, L., PARDIS, S., & KHALILI, F.. (2006). AN IN VITRO EVALUATION OF ROOT ANATOMY, DETECTION OF APICAL FORAMEN AND APICAL CONSTRICTION IN HUMAN MANDIBULAR PREMOLAR TEETH. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), 6(3-4 (11)), 47-56. SID. https://sid.ir/paper/108398/en

Vancouver: Copy

SAFI L., PARDIS S., KHALILI F.. AN IN VITRO EVALUATION OF ROOT ANATOMY, DETECTION OF APICAL FORAMEN AND APICAL CONSTRICTION IN HUMAN MANDIBULAR PREMOLAR TEETH. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES)[Internet]. 2006;6(3-4 (11)):47-56. Available from: https://sid.ir/paper/108398/en

IEEE: Copy

L. SAFI, S. PARDIS, and F. KHALILI, “AN IN VITRO EVALUATION OF ROOT ANATOMY, DETECTION OF APICAL FORAMEN AND APICAL CONSTRICTION IN HUMAN MANDIBULAR PREMOLAR TEETH,” JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), vol. 6, no. 3-4 (11), pp. 47–56, 2006, [Online]. Available: https://sid.ir/paper/108398/en

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