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Article
Impacted mandibular third molar and the inferior alveolar canal in Iraqis (A radiographical study)

Author: Dr.luay Nafie kaka. B.D.S, M.Sc.* د.لؤي نافع كاكا
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2008 Volume: 5 Issue: 4 Pages: 403-409
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Aim of the study: To evaluate the position of impacted mandibular third molars and its relation to the inferior alveolar canals by the aid of panoramic radiographs.Materials and method: The study includes (246) panoramic radiographs with (444) impacted mandibular third molar teeth that are collected from different oral and maxillofacial surgery units belong to patients with the age between (20-35) years who seeks for help to remove their impacted mandibular third molar teeth in order to evaluate the relationship between the position of impacted mandibular third molars and its relation to the inferior alveolar canals by the aid of panoramic radiographs. Impacted mandibular third molar teeth position were classified as vertical, horizontal, mesioangular, and distoangular (Winter’s classification)and the radiographic relationship of the root apex of impacted mandibular third molar to the inferior alveolar canal was categorized as :below,superimpose,grooving and none of them(none).Result and discussion: The majority of impacted mandibular third molar teeth was of mesioangular position (35%), then the vertical position (29%), distoangular (20%), and the horizontal position (16%) in both gender and males has a higher percentage than females.Ingeneral,superimposition relationship between impacted mandibular third molar teeth and inferior alveolar canal is the highest (39%) in most of the cases among the other types of relation, then to a lesser extent was below the roots (31%), grooving (25%), and lastly, none (5%).The alveolar canal is mostly below the vertical and horizontal type of impaction. The alveolar canal is mostly superimposed on the roots of mesioangular and distoangular type of impaction. Grooving relation ship is most common with mesioangular impacted mandibular third molar.


Article
Anatomical study of the relationship of impacted mandibular third molar root apex to inferior alveolar canal in Kurdistan population using orthopantomogram
دراسة تشريحية لعلاقة قمة الجذر المولي الفك العلوي المتأثرة بالقناة السنخية الرديئة في سكان كوردستان باستخدام تقويم العظام

Authors: Khoshee Salih Hameed Al-Mufty --- Fedil Andraws Yalda --- Ali Sultan Al-Refai
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2017 Volume: 21 Issue: 3 Pages: 1859-1868
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Extraction of an impacted mandibular third lower molar tooth is one of the common surgical procedures that may lead to the damage of inferior alveolar nerve due to roots proximity to the mandibular canal. This study aimed to know the relative relationship and proximity of the mandibular third molar roots to the inferior alveolar canal in relation to gender, age, depth of impaction, relation with ramus, and type of angulation of the impacted tooth in Kurdistan population.Methods: A sample of 366 digital panoramic radiographs of patients with impacted mandibular third molar was studied. Panoramic radiographic signs images were evaluated for the presence of root contact with the superior border of the mandibular canal, darkening of the roots apex, deflected roots, narrow root, superimposition of the canal, interruption of the white line, diversion of the inferior alveolar canal, and narrowing of the inferior alveolar canal. The depths of impaction, relation with ramus, and type of angulation were also studied.Results: Significant relation of the proximity of the mandibular third molar roots to the inferior alveolar canal with the gender (P = 0.001) and age (P <0.001) were seen. A significant relation of the proximity of the mandibular third molar roots to the inferior alveolar canal with the depth of impaction (P <0.001), relation with the ramus (P =0.004), and angulation of impaction were also seen (P <0.001).Conclusion: Significant relation of the proximity of the mandibular third molar roots to the inferior alveolar canal with gender, age, depth of impaction, relation with the ramus, and angulation of impaction were seen.


Article
Determination of the Real Distance of Mandibular Third Molar to Inferior Alveolar Canal

Author: Asmaa Basher Al-Saffar
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2016 Volume: 16 Issue: 1 Pages: 19-29
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To determine the real not radio graphical proximity of mandibular third molar tooth to the inferior dental canal (IDC) using panoramic radiograph. Materials and Methods: 144 mandibular third molars were evaluated by panoramic radiography. The teeth were grouped into erupted vs. un erupted further subdivided by tooth angulations. The real distance from the most inferior aspect of the mandibular third molar tooth to the superior border of the inferior alveolar canal (IAC) was calculated regarding to the reference object used. Descriptive statistics were performed as well as a t test was performed to compare erupted and unerupted teeth, and ANOVA was used to determine a significant difference where exists based upon tooth angulations. In addition, intra observer analysis was done to ensure the standardization of the radiologist interpretation. Results: The mean distance from erupted mandibular third molar teeth to the inferior alveolar canal was 0.23mm. This distance was significantly different from unerupted teeth (P = .000). The mean values for unerupted teeth were negative values which indicated that the apices of all teeth measured was below the superior border of the canal –1.26 mm and as follows: Mesioangular–1.32 mm, vertical – 1.34 mm and –1.04mm for horizontal impactions. Statistically there was no significant positional difference between the impaction groups (P = .835). In general there was a significant difference in third molar position between those age equal and less than 22 years old and those equal and over 23 years old. Conclusions: Unerupted mandibular third molar teeth (mostly vertical impaction) are closer to the inferior alveolar canal than erupted teeth and persons in general of an age equal or less than 23 years old have a closer lower third molar to mandibular canal than other ages and there is no significant relation between this age group and any of impaction types.


Article
Relationship of inferior alveolar canal to the apices of lower molar teeth radiographically
العلاقة بين قناة السنخية السفلية للقمم من أدنى راضي الأسنان المولي

Author: Ali Ghanim abdulla علي غانم عبدالله
Journal: The Medical Journal of Tikrit مجلة تكريت الطبية ISSN: 16831813 Year: 2008 Volume: 1 Issue: 141 Pages: 124-126
Publisher: Tikrit University جامعة تكريت

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Abstract

The mandibular foramen (MF) is located on the medial surface of the ramus of mandible, leading into the inferior alveolar canal (I.A) which accommodates the inferior alveolar neurovascular bundle, in this study sixty periapical radiographs were taken to examine the approximity of the canal to mandibular molar apices, and it has been found the mean distance of mesial and distal roots of molar teeth to the canal as follows, for the first molar were (5.63), (6.16) respectively. While for the second molar were (2.3), (3.08) respectively, the recorded results reinforce the cases neuralgia, and numbness due to injury of (I.A) canal particularly in complicated extraction for the lower second molar teeth

يقع الثقبة الفك السفلي (وسط) على السطح وسطي للالرأد، مما يؤدي في القناة السنخية السفلية (IA) الذي يستوعب وعائية عصبية السنخية السفلية حزمة، في هذه الدراسة تم اتخاذ 60 ذروية الصور الشعاعية لدراسة approximity للقناة إلى قمم المولي الفك السفلي، ووجد أنه من متوسط ​​المسافة من جذور إنسي والبعيدة الأسنان المولي للقناة كما يلي، على سبيل الرحى الأولى كانت (5.63)، (6.16) على التوالي. أما بالنسبة للرحى الثانية كانت (2.3)، (3.08) على التوالي، والنتائج المسجلة تعزز العصبي الحالات، وخدر بسبب الاصابة من (IA) قناة خاصة في مجال استخراج معقدة لخفض الأسنان المولي 2

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