The relationship of the inferior alveolar nerve canal with the roots of impacted mandibular third molars in a group of the South Indian population

2015 ◽  
Vol 6 (3) ◽  
pp. 108
Author(s):  
SujataMohan Byahatti
2006 ◽  
Vol 7 (2) ◽  
pp. 71-78 ◽  
Author(s):  
Abdalla M. Hazza's ◽  
Zakarreya S.M. Albashaireh ◽  
Anwar B. Bataineh

Abstract Objective The aim of this study was to evaluate the topographic relationship between the inferior dental canals (IDCs) and the roots of impacted mandibular third molars. Methods Preoperative orthopantomograms (OPGs) were examined and the proximity of the IDC to the roots of impacted mandibular third molars was categorized into the following: groups: superimposition, adjacent, perforation, grooving, notching, or none. The categories notching, grooving, and perforation were regrouped together and called the true relationship between the IDC and the root apices. The type of impaction, age, and sex of the patient were also noted. Results The positional category of 96.1% of the radiographs with bilateral impactions was identical on both sides of the mandible. Out of 2526 impacted mandibular third molars examined, 1146 (45.3%) belonged to the superimposition category, 663 (26.2%) were adjacent, 312 (12.3%) showed grooving, 78 (3.08%) showed notching, and 9 (0.35%) were actually perforating the IDC. The results showed 15.7% of the total cases were in true relationship with the IDC. There was a significant association (p = 0.000) between patient's age and true relationship. Conclusions Identical positional relationship of the bilateral impacted third molars to the IDC was noted in 96.1% of the radiographs. The position of the IDC in relation to the roots of impacted third molars varied according to the patient's age. Citation Hazza'a AM, Albashaireh ZSM, Bataineh AB. The Relationship of the Inferior Dental Canal to the Roots of Impacted Mandibular Third Molars in a Jordanian Population. J Contemp Dent Pract 2006 May;(7)2:071-078.


Author(s):  
Deyonna Deepthi Fernandes ◽  
Syed Altaf Hussain

Abstract Introduction The philtral ridges form a prominent visual landmark in the upper lip. An aesthetically pleasing cleft lip repair should restore this preferably without any scars cutting across it. Although there are several scientific publications on morphology of this structure and its variations, very few studies on the Indian population have been published. Aim To study the morphology of the philtral ridges and their relationship to the columellar base in normal Indian children and its significance in cleft lip repair. Methods 115 normal healthy children from southern India aged between one and 12 years were studied based on direct observation of the relationship of the superior end of the philtral ridge to the columellar base and nasal sill. In type A, the philtral ridge terminates at the nasal sill just lateral to the columellar base, and in type B, it either reaches or fades before reaching the columellar base. All observations were performed by the first author by examining standardized two-dimensional (2D) photographs of the upper lip-nose complex. Results In this study, 74% of the subjects had the philtral column extending lateral to the columellar base. Conclusion These finding assume a significance since, in a substantial proportion of the studied population, techniques of cleft lip repair such as the rotation advancement method, place a scar that crosses the upper third of the philtral ridge which may be undesirable.


2014 ◽  
Vol 1 (1) ◽  
pp. 32 ◽  
Author(s):  
Calvin Gan Chee Ren ◽  
B. Senthil Kumar

<strong>Introduction:</strong>In prehistoric humans, when the jaw size permitted space for normal dental development and position in the arches, third molar may have been a vital survival tool. However, as human evolution has progressed, jaw size has been gradually decreasing (Lamarckian Evolution). Hence due to the decrease in size of the jaw bone, it’s been reported that approximately 65% of the human population has at least one impacted third molar, and third molars that do erupt are often malposed in the arches and are consequently difficult to clean and prone for infection.<p><strong>Aim and Objective:</strong> To study the prevalence of eruption of third molar tooth among South Indians and Malaysians by observing the presence of third molars among them and to analyze the percentage of impacted third molars and congenital absence of third molar teeth among the Indian and Malaysian population.</p><p><strong>Materials and Methods:</strong>50 Malaysians and 50 Indians (25 males and 25 females in each population) aged between 17 to 25 years old were examined for the presence or absence of the third molars. To confirm the congenital absence of third molars, Orthopantomograms (OPG) were taken.</p><p> </p><p><strong>Results and Conclusion:</strong> In South Indian Population, it was noted that only 48% of males and 64% of females have congenital absence of third molar, and 52% of males and 36% of females have erupted third molars. 16% of males had partly impacted third molar whereas in case of female it was 28%. Congenital absence of third molars among females was 16% more than in males. More males (36%) had impacted third molars than females (24%). It was also noted that majority of them have their maxillary third molars erupted first before their mandibular third molars. In Malaysian Population, it was noted that only 28% of males and 20% of females had congenital absence of third molars, and 72% of males and 80% of females had erupted third molars. 40% of males had partly impacted third molar whereas in case of female it was 52%. Congenital absence of third molars among males was 8% more than females. More males (32%) had impacted third molars than females (28%). It was also noted that in majority of them their mandibular third molars had erupted before their maxillary third molars. When compared among south Indians and Malaysian population congenital absence and impacted third molars are more common in south Indians, whereas partly impacted third molar is more common among Malaysians.</p>


2012 ◽  
Vol 3 (6) ◽  
pp. 148-150
Author(s):  
Dr.M.Ganesh Dr.M.Ganesh ◽  
◽  
Dr.S.A.Sridevi Dr.S.A.Sridevi ◽  
Dr Lashmayan. M Dr Lashmayan. M

2018 ◽  
Vol 6 (12) ◽  
pp. 2395-2401
Author(s):  
Mamdouhh Ahmed ◽  
Mariam Kamel Salah ◽  
Nesrine Khairy

AIM: To evaluate a new technique for surgical removal of deeply impacted mandibular third molars (DIMTM), using computer-guided cutting guide to maintain inferior alveolar nerve (IAN) integrity and the covering buccal bone. PATIENTS AND METHODS: Eighteen cases indicated for removal of DIMTM. Cone-beam Computed Tomography (CBCTs) used to determine the tooth’s relation to the IAN. Computer-guided software used for fabrication of surgical cutting guide stent to expose the impacted tooth and repositioning of bone after odontectomy without fixation. Clinical assessment included a neurosensory deficit of IAN, pain using a visual analogue scale (VAS), facial swelling, and maximal mouth opening (MMO). CBCTs were taken immediately and six months postoperatively to evaluate position and healing of bone. RESULTS: None of the patients showed a permanent neurological deficit of IAN while all patients showed normal parameters of pain, facial swelling and MMO. CONCLUSION: this technique has shown the accurate determination of the bony window cuts with subsequent preservation of IAN and external oblique ridge.


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