TY - JOUR
T1 - Axial triangle of the maxillary sinus, and its surgical implication with the position of maxillary sinus septa during sinus floor elevation
T2 - A CBCT analysis
AU - Jung, Junho
AU - Park, Jung Soo
AU - Hong, Seoung Jin
AU - Kim, Gyu Tae
AU - Kwon, Yong Dae
N1 - Publisher Copyright:
© 2020 Allen Press Inc.. All rights reserved.
PY - 2020/4/21
Y1 - 2020/4/21
N2 - The aim of this study was to measure the convexity of the lateral wall of the maxillary (Mx) sinus and identify the locational distribution of antral septa in relation to the zygomaticomaxillary buttress (ZMB), in order to suggest another anatomical consideration and surgical modification of sinus floor elevation procedures. This study was designed as a cross-sectional study, and a total of 134 patients and 161 sinuses containing edentulous alveolar ridges were analyzed. The angle between the anterior and lateral walls of the Mx sinus (lateral sinus angle [LSA]), and the angle between the midpalatal line and the anterior sinus wall (anterior sinus angle [ASA]) were measured. Mean LSAs and ASAs were 105.98 6 9.868 and 58.48 6 6.438, respectively. No significant difference between left and right sides was found (LSA, P ¼ .420; right ¼ 105.58 6 9.278; left ¼ 105.58 6 9.278 and ASA, P ¼ .564; right ¼ 57.98 6 6.808; left ¼ 58.88 6 6.028). The prevalence of septa was 37.3%, and it was most frequently noted in the second molar region (32.8%), followed by the first molar (20.9%), retromolar (16.4%), and second premolar regions (14.9%). Septa were most frequently located posterior to the ZMB (49.2%), while ZMB was mostly located in the first molar region (66.4%). Narrow LSAs may complicate the surgical approach to the posterior maxilla, especially when sinus elevation should be used in the second molar region. Considering the occasional presence of antral septa, membrane elevation may be complicated when a septum is encountered during the procedure. These results suggest that 3-dimensional examination of the convexity of the Mx sinus should be performed preoperatively to choose proper surgical techniques and minimize surgical complications.
AB - The aim of this study was to measure the convexity of the lateral wall of the maxillary (Mx) sinus and identify the locational distribution of antral septa in relation to the zygomaticomaxillary buttress (ZMB), in order to suggest another anatomical consideration and surgical modification of sinus floor elevation procedures. This study was designed as a cross-sectional study, and a total of 134 patients and 161 sinuses containing edentulous alveolar ridges were analyzed. The angle between the anterior and lateral walls of the Mx sinus (lateral sinus angle [LSA]), and the angle between the midpalatal line and the anterior sinus wall (anterior sinus angle [ASA]) were measured. Mean LSAs and ASAs were 105.98 6 9.868 and 58.48 6 6.438, respectively. No significant difference between left and right sides was found (LSA, P ¼ .420; right ¼ 105.58 6 9.278; left ¼ 105.58 6 9.278 and ASA, P ¼ .564; right ¼ 57.98 6 6.808; left ¼ 58.88 6 6.028). The prevalence of septa was 37.3%, and it was most frequently noted in the second molar region (32.8%), followed by the first molar (20.9%), retromolar (16.4%), and second premolar regions (14.9%). Septa were most frequently located posterior to the ZMB (49.2%), while ZMB was mostly located in the first molar region (66.4%). Narrow LSAs may complicate the surgical approach to the posterior maxilla, especially when sinus elevation should be used in the second molar region. Considering the occasional presence of antral septa, membrane elevation may be complicated when a septum is encountered during the procedure. These results suggest that 3-dimensional examination of the convexity of the Mx sinus should be performed preoperatively to choose proper surgical techniques and minimize surgical complications.
KW - Antral septa
KW - Edentulous posterior maxilla
KW - Sinus floor elevation
KW - Zygomaticomaxillary buttress
UR - http://www.scopus.com/inward/record.url?scp=85092750123&partnerID=8YFLogxK
U2 - 10.1563/AAID-JOI-D-18-00229
DO - 10.1563/AAID-JOI-D-18-00229
M3 - Article
C2 - 32315428
AN - SCOPUS:85092750123
SN - 0160-6972
VL - 46
SP - 415
EP - 422
JO - Journal of Oral Implantology
JF - Journal of Oral Implantology
IS - 4
ER -