|
KMID : 0896020080380020095
|
|
Korean Journal of Oral and Maxillofacial Radiology
2008 Volume.38 No. 2 p.95 ~ p.101
|
|
|
Positional relationship between the maxillary sinus floor and the apex of the maxillary first molar using cone beam computed tomograph
|
|
Kim Kyoung-A
Koh Kwang-Joon
|
|
|
Abstract
|
|
|
Purpose : To assess the positional relationship between the maxillary sinus floor and the apex of the maxillary first
molar using cone beam computed tomograph (CBCT).
Materials and Methods : CBCTs from 127 subjects were analysed. A total of 134 maxillary first molars were classified
according to their vertical and horizontal positional relationship to the maxillary sinus floor and measured
according to the distance between the maxillary sinus floor and the maxillary first molar.
Results : Type III (The root projected laterally on the sinus cavity but its apex is outside the sinus boundaries) was
dominated between 10 and 19 years and type I (The root apex was not in contact with the cortical borders of the
sinus) was dominated (P?0.05) between 20 and 72 years on the vertical relationship between the maxillary sinus
floor and the apex of the maxillary first molar. The maxillary sinus floor was located more at the apex (78.2%) than
at the furcation (21.3%) for the palatal root. The distance from the root apex to the maxillary sinus floor confined to
type I was increased according to the ages (P?0.05). Type M (The maxillary sinus floor was located between the
buccal and the palatal root) was most common (72.4%) on the horizontal relationship between the maxillary sinus
floor and the apex of the maxillary first molar.
Conclusion : CBCT can provide highly qualified images for the maxillary sinus floor and the root apex of the maxillary
first molar. (Korean J Oral Maxillofac Radiol 2008; 38 : 95-101)
|
|
|
KEYWORD
|
|
|
Tomography, Cone Beam Computed, Maxillary Sinus, Maxillary First Molar
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|