The Relationship of the Lower Third Molar to the Anterior Dental Crowding

2014 ◽  
Vol 1 (2) ◽  
pp. 29-32
Author(s):  
Labeed S. Hasan ◽  
Maha I. Abdulazeez ◽  
Emad H. Abdulla
2004 ◽  
Vol 4 (1) ◽  
pp. 1-9
Author(s):  
Nada Al–Sayagh ◽  
Anas Mohammad ◽  
Luqman Ismail

Medicina ◽  
2009 ◽  
Vol 45 (2) ◽  
pp. 147 ◽  
Author(s):  
Antanas Šidlauskas ◽  
Kristina Lopatienė

The epidemiological data on the prevalence of malocclusion is an important determinant in planning appropriate levels of orthodontic services. The occurrence of occlusal anomalies varies between different countries, ethnic and age groups. The aim of this study was to describe the prevalence of malocclusion among Lithuanian schoolchildren in the 7–9-, 10– 12-, and 13–15-year age groups assessing occlusal morphology. The study included 1681 schoolchildren aged 7–15 years. The crowding, spacing, overbite, overjet, the relationship of the first upper and lower molars according Angle’s classification, and posterior crossbite were assessed. The study demonstrated that only 257 children had normal occlusion, and 44 had undergone orthodontic treatment among them. The greatest overjet in the studied contingent was 11 mm, and the negative overjet – 3 mm. The overbite ranged between 0 and 6 mm with a mean of 2.29±1.23 mm. Posterior crossbite was recorded in 148 children (8.8%). This study showed that the prevalence of malocclusion among 7–15-year-old Lithuanian schoolchildren is 84.6%. The most common malocclusion was dental crowding. The upper dental arch crowding was registered for 44.1% and lower for 40.3% of all schoolchildren. The class I molar relationship was detected in 68.4% of the subjects, class II – in 27.7%, and class III – in 2.8%.


1974 ◽  
Vol 1 (4) ◽  
pp. 139-142
Author(s):  
C. P. Adams

The Oblique Lateral Jaw Radiograph has been used as a routine diagnostic x-ray view for many years as an aid to orthodontic diagnosis and for the assessment of the positions of unerupted third molar teeth. Many methods for obtaining clear undistorted views of the teeth have been suggested from a freehand setting up of film, patient and x-ray tube, to the use of simple orientated devices. The present article describes a method of standardizing the relationship of film and x-ray tube to one another so that it is only necessary for the radiographer thereafter to place the patient on the film area in a manner depending on whether a view. is required of the third molars only or of the complete upper and lower buccal segments.


2012 ◽  
Vol 13 (6) ◽  
pp. 819-823 ◽  
Author(s):  
Uma Shankar ◽  
KR Hari ◽  
T Praveen Kumar Reddy ◽  
Shravan Kumar Katakam ◽  
Deepti Janga

ABSTRACT Background Permanent mandibular third molar are most commonly impacted teeth. In planning the surgical removal of mandibular third molar, correct diagnosis requires not only their precise spatial location, but also a thorough and accurate assessment of the intimate relationship with adjacent anatomical structures. Various imaging modalities have been used for localizing the mandibular third molar but not satisfactorily. Aim This prospective study of 30 patients with 42 impacted mandibular third molars was carried out with the aim of finding evidence for justifying the use of computed tomography and orthopantomography as a diagnostic modality, prior to surgical intervention of impacted mandibular third molar. Materials and methods Subjective evaluation of the CT and OPG images by two observed had shown that there was significant difference between the CT and OPG for radiographic visibility of mandibular canal in relation to third molar. Results Data analysis was done with Chi-square test (χ2) and z-test to find the significant difference between the two radiographic modalities OPG and CT in localizing special relationship of impacted mandibular third molar. The comparison of OPG and CT showed z-value >1.5 in darkening of roots (1.98), deflection of root (2.00) interruption of z-value = 0 in narrowing of canal and dark, bifid apexes. Also it showed p-value <0.05 in all the radiographic signs except narrowing of mandibular canal and and dark and bifid apexes. Conclusion The spiral CT image provides a unique opportunity to determine the exact position of impacted mandibular third molar and their relationship to adjacent structure in all three planes. Clinical significance Computed tomography is highly instrumental in depicting the relationship of mandibular third molar with inferior alveolar nerve canal before treatment and accurate appraisal of the several aspects can be made regarding prognosis. How to cite this article Katakam SK, Shankar U, Thakur D, Reddy TPK, Hari KR, Janga D. Comparison of Orthopantomography and Computed Tomography Image for Assessing the Relationship between Impacted Mandibular Third Molar and Mandibular Canal. J Contemp Dent Pract 2012;13(6):819-823.


1995 ◽  
Vol 53 (10) ◽  
pp. 1178-1181 ◽  
Author(s):  
M.Anthony Pogrel ◽  
Andrew Renaut ◽  
Brian Schmidt ◽  
Awnie Ammar

2012 ◽  
Vol 5 (3) ◽  
pp. 127-135 ◽  
Author(s):  
Bruno G. Duarte ◽  
Diogo Assis ◽  
Paulo Ribeiro-Júnior ◽  
Eduardo Sanches Gonçales

The objective of this study is to discuss problems associated with dental retention through three clinical cases of mandible fractures related to the presence of retained lower third molars, emphasizing the possibility of mandible fractures resulting from this or from the extraction procedure. The three evaluated patients had a fracture in the mandible angle. The third molars were present in all the cases, as was the relationship of the fracture with the teeth. After evaluating the three cases and reviewing literature, it is believed that the presence of the retained lower third molars and the surgical procedures for their extraction increase the risk of mandible angle fractures.


BDJ ◽  
2007 ◽  
Vol 203 (1) ◽  
pp. 29-31 ◽  
Author(s):  
P. Karakas ◽  
M. Üzel ◽  
J. Koebke

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