Morphometric Analysis of the Upper Premolars

Stošić, Nenad; Dačić, Stefan; Ranđelović, Marina; Andrijana, Jovančić; Ivana, Đorđević; Maja, Cvetković; Dušan, Ilić; Petrović, Aleksandra; Dačić, Simonović Dragica

doi:10.1515/afmnai-2016-0003

Cited by 4 publications

(1 citation statement)

References 12 publications

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“…У указанного числа пациентов было исследовано 97 зубов (премоляров и моляров) верхней челюсти. При определении анатомических ориентиров использовали сведения специальной литературы [13,14,15]. В зависимости от принадлежности к сегментам челюсти все зубы пациентов, у которых анализировали анатомические особенности корневых каналов были разделены на 4 группы (табл.…”

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Morphological Features of the Structure of the Root Canals of Premolars and Molars of the Upper Jaw on the Basis of Cone-Beam Computed Tomography

Shott¹,

Pohodenko-Chudakova²

2021

Ukr. ž. med. bìol. sportu

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The key issue for dentists of all specialties is the fight against foci of chronic odontogenic infection. Much attention is paid to the introduction of operations that preserve teeth performed at an outpatient surgical appointment, but specialists rarely use them and often remove teeth. The purpose of the study is to determine the morphological features of the structure of the root canals of the premolars and molars of the upper jaw on the basis of cone-beam computed tomography of the jaws, to assess the quality of previously performed endodontic treatment and the frequency of destructive processes in the long-term follow-up. Materials and methods. Anatomical features of the structure of the premolars and molars of the upper jaw were retrospectively studied on the basis of cone-beam computed tomography data in 97 patients aged 26-71 years. 97 teeth (premolars and molars) of the upper jaw were examined in this number of patients. Depending on the belonging to the jaw segments, all the teeth of patients whose anatomical features of the root canals were analyzed, were divided into 4 groups: the first premolars – n=6; the second premolars – n=15; the first molars – n=54; the second molars – n=22. Results and discussion. The study of the morphology of the root canals of the first and second premolars of the upper jaw did not reveal statistically significant differences in the angle of inclination of the root canals, the number of roots and root canals. The analysis of the morphology of the root canals of the first and second molars of the upper jaw also found no significant differences in the angle of inclination of the root canals. At the same time, the share of unsatisfactory endodontic treatment in the analyzed groups of teeth was 82.5%. In addition, destructive bone processes in the periapical region were detected in all molars and premolars of the upper jaw, regardless of the quality of endodontic treatment. Conclusion. Each of the above results as well as all of them together, convincingly demonstrate: 1) insufficient effectiveness of the use of endodontic treatment alone in order to sanitize the foci of chronic odontogenic infection located in the apices of the roots of the molars and premolars of the upper jaw which is largely justified by the features of the anatomical structure of the latter; 2) the need to develop a system of differentiated use of surgical methods of treatment for the rehabilitation of foci of chronic odontogenic infection of the specified localization, taking into account the variant anatomy of the root canals of the premolars and molars of the upper jaw

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Morphological Features of the Structure of the Root Canals of Premolars and Molars of the Upper Jaw on the Basis of Cone-Beam Computed Tomography

Shott¹,

Pohodenko-Chudakova²

2021

Ukr. ž. med. bìol. sportu

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Root anatomy and apical canal morphology of maxillary first premolars

Kacarska

Zivadinovic

2018

Maced. Pharm. Bull.

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Understanding the root anatomy and apical canal morphology of maxillary premolars is a key prerequisite for successful surgical and endodontic treatment. The aim of this study was to assess the root anatomy and apical canal morphology of maxillary first premolars. To achieve the set task, 30 maxillary first premolars were extracted. After thorough rinse visual assessment of root anatomy was made. Each root was transversally sectioned six millimeters from apex with a straight hand piece. The apical samples were decalcificated in 7.5% trichloroacetic acid, transversal sections were made, stored in 10% formalin then dyed in hematoxylin and eosin and numerated from I to VI. Apical canal morphology was evaluated with an optical microscope. Majority of maxillary first premolars had double roots (63.0%; n=19) that were mostly separated (50.0%; n=15) containing a single root canal. Minority had double roots that were fused (13.0%; n=4) with two root canals. Single root with almost equal occurrence of two, as well as variable root canal configuration were found in (30.0%; n=9). A very rare occurrence of maxillary first premolars with three roots (7.0%; n=2) was detected, two vestibular and one palatal, each containing a single canal configuration. Accessory lateral canals were detected in 20% of maxillary first premolars. Transversal communications were detected in maxillary premolars with one root and double fused roots (26.6%; n=8). A single apical foramen was detected in majority of maxillary first premolars (50.0%; n=15). Two apical foramina were detected in (33.4%; n=10), three in (10.0%; n=3) and four in (6.6%; n=2) maxillary premolars. Keywords: maxillary first premolar, root anatomy, apical canal morphology, decalcification, optical microscopy

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Root form and morphology of human permanent maxillary first premolars of an Indo-Dravidian population based in southern India: An in vitro study

et al. 2020

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A BSTRACT Aim: The aim of this study was to analyze root form and morphology of human maxillary first permanent premolars of an Indo-Dravidian population from southern India. Materials and Methods: Eight hundred and twenty-two maxillary first permanent premolars were cleansed and stored appropriately. Morphology and root form analysed, segregated into Groups (Gps): Gp I, Gp II, and Gp III, and later divided into subgroups (SGs) based on specific criteria. Gp I was divided into two SGs: SG A (minimal or absence of grooving in the root) ( n = 252) and SG B (clear and defined longitudinal groove in the root) ( n = 104), and Gp II was divided into SG C (roots dividing in coronal one-third) ( n = 154), SG D (roots dividing in the middle one-third) ( n = 158), and SG E (roots dividing in the apical one third) ( n = 138). Gp III consisted of only one SG F (teeth with three roots) ( n = 16). The groups were analyzed separately, their external root form and morphology were recorded. Root form was analyzed, and results were tabulated. This study was compared with other studies and statistically analyzed. Results: Gp II was common with an incidence of 54.74%. Gp I was the next most common with an incidence of 43.3%. Gp III was the least common with an incidence of 1.94%. The number and distribution of roots was also computed. Six types of root form were identified (Type [Ty] A = 30.65%, Ty B = 12.65%, Ty C = 18.73%, Ty D = 19.22%, Ty E = 16.78%, and Ty F = 1.94%). Conclusion: Awareness and assessment of root form, number preoperatively with regard to specific populations before initiation will pave way for successful outcome of therapy.

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Morphometric Analysis of the Upper Premolars

Cited by 4 publications

References 12 publications

Morphological Features of the Structure of the Root Canals of Premolars and Molars of the Upper Jaw on the Basis of Cone-Beam Computed Tomography

Morphological Features of the Structure of the Root Canals of Premolars and Molars of the Upper Jaw on the Basis of Cone-Beam Computed Tomography

Root anatomy and apical canal morphology of maxillary first premolars

Root form and morphology of human permanent maxillary first premolars of an Indo-Dravidian population based in southern India: An in vitro study

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