Abstract:
BACKGROUND:In a variable proportion of maxillary sinuses alveolar antral artery is located close to the residual ridge, increasing the chances for haemorrhagic complications during sinus floor elevation procedures. MATERIAL AND METHODS:Retrospective observational study of CBCT explorations performed for implant-treatment planning. The upper first molar area was selected for this study. The relative uncertainty (standard deviation of the measurement divided by its mean and expressed as a percentage from 0% to 100%) was chosen for determining the observational errors. For modeling the chances of AAA detection, the generalized additive models (GAM) approach was chosen. RESULTS:A total of 240 maxillary sinuses were studied (46.25% males) whose median median age was 58 years old (IQR: 52-66). Univariate models showed that the chances for an AAA-alvelar crest distance ≤15mm increase in wider sinuses with lower, subsinusally edentulous crests. When distance is considered as a continuous variable, the best mutivariate model showed an explained deviance of 67% and included AAA diameter, distance AAA-sinus floor, sinus width, and shape, height and width of the residual ridge. Thinner AAAs are found closer to the crest (within the ≤15mm safe distance). CONCLUSIONS:Bearing in mind the inclusion criteria and the limitations of this investigation, it is concluded that there is a high proportion of maxillary sinuses where AAA describes a course close to the alveolar crest (≤15mm), which was classically considered a safe distance for SFE. This position is related to the presence of atrophic crests (depressed ridge form) and wide maxillary sinuses where the distance of the vessel to the floor of the sinus is small. This information may permit a better surgical planning of SFE procedures.
journal_name
Med Oral Patol Oral Cir Bucaljournal_title
Medicina oral, patologia oral y cirugia bucalauthors
Varela-Centelles P,Loira-Gago M,Gonzalez-Mosquera A,Seoane-Romero JM,Garcia-Martin JM,Seoane Jdoi
10.4317/medoral.21475subject
Has Abstractpub_date
2016-11-01 00:00:00pages
e758-e765issue
6eissn
1698-4447issn
1698-6946pii
21475journal_volume
21pub_type
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