Evaluation of Inferior Alveolar Canal Position in Cross Sectional Cone Beam Computed Tomography Images

Document Type : Original Article

Authors

1 Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

2 Department of Vital Statistics, Faculty of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Abstract

Background and Objective: Cone beam computed tomography (CBCT) has made considerable improvements  in maxillofacial  imaging. Estimating canal location is one of its applications. The  aim  of  this  study  is  to  evaluate  whether differences in patient gender or age  are  predictive  of  differences in  the  relative location  of  the inferior  alveolar  canal.
Subjects and Methods: Existing CBCT images, acquired  by  the  Promax  3D (Planmeca Finland), taken from the maxillofacial  region  from  120  dentate  patients (46.7% male,53.3% female , mean age 42.1%)( who  visited  a  private  clinic  in  Ahvaz  were  selected and processed by Romexis viewer software. Sixteen  measurements (in mm)  were  taken  at  the  level  of  the  IAN  and  mesial  and  distal  root  apices. Anatomic measurements were made by 2 observers. Data were analyzed by  Pearson  correlation  and  t-test.
Results: The  distance  from  the  most  lingual  aspect  of  the  root  to the lingual cortical plate 3 mm coronal to the apex, were  less  in  females  in  mesial and  distal  roots  of  second  molar ( P<0.05). None of the other variables were associated with sex or age.
Conclusions: Collectively, these data indicate that relative positions of IAN changes are not dependent on gender or age. Application of CBCT imaging in presurgical planning is recommended.
 

Keywords


1-Ozturk  A,  Potluri  A,  Vieira  AR.  Position  and  course  of  the  mandibular  canal  in  skulls.  Oral Surg Oral
   Med Oral  Pathol Oral Radiol  2012 April; 113(4): 453–8. 
2-Kim  TS,  Caruso  JM,  Christensen  H,  Torabinejad  M. A  comparison  of  cone-beam  computed  tomography  and  direct  measurement  in  the  examination  of  the  mandibular  canal  and  adjacent  structures.  J  Endodont  2010Jul; 36(7): 1191–4. 
3-Adigüzel  Ö,  Yiğit-Özer  S,  Kaya  S,  Akkuş  Z.  Patient-specific  factors  in  the  proximity  of  the  inferior  alveolar  nerve  to  the  tooth  apex.  Medicina  oral,  patología  oral y cirugía  bucal.  2012 Nov; 17(6): 1103-8.
4-Simonton  JD,  Azevedo  B,  Schindler  WG,  Hargreaves  KM.  Age- and  gender-related  differences  in  the  position  of  the  inferior  alveolar  nerve  by  using  cone  beam  computed  tomography.  J  Endodont 2009 Jul; 35(7): 944–9. 
5-Kwon  KH,  Sim  KB,  Lee  JM.  Evaluation  of  the  course  of  the  inferior  alveolar  canal in  the  mandibular  ramus  using  cone  beam  computed  tomography.  J  Korean  Assoc  Oral  Maxillofac  Surg 2012 Aug; 38: 231-9.
 6-Levine  MH,  Goddard  AL,  Dodson  TB.  Inferior  alveolar  nerve  canal  position:  a  clinical  and  radiographic  study. J Oral Maxillofac Surg 2007 Mar; 65(3): 470–4.
7-Angel  JS,  Mincer  HH,  Chaudhry  J,  Scarbecz  M.  Cone-beam  computed  tomography  for  analyzing  variations  in  inferior  alveolar  canal  location  in  adults  in  relation  to  age  and  sex.  J  Forensic  SCI  2011 Jan ; 56(1): 216–9.
8-Hosseiny  goosheh  S, Asadi  Samani  S, Shahidi  S, Zamiri  B, Asadi  Samani  S. Anatomical relationship  between  mandibular  third  molar  roots  and  mandibular  canal  in  panoramic radiography  and  CT  scans .Tabib e shargh 2008; 10 (3) : 227-234.
9-Haghani  J, Torabi Parizi  M, Mehdizadeh  MA. Evaluation  of  anatomical  location  of  the mandibular  canal  in  panoramic  radiographs  in  patients  over  25  years. J  Dent  Sch 2008; 27(3): 128.