Distance of the alveolar antral artery from the alveolar crest. Related factors and surgical considerations in sinus floor elevation

  1. Pablo Ignacio Varela Centelles 1
  2. María Loira Gago 2
  3. Antonio González Mosquera 2
  4. Juan M. Seoane Romero 2
  5. J.M. García Martín 3
  6. Juan Manuel Seoane Lestón 2
  1. 1 C.S. Praza do Ferrol. EOXI Lugo, Cervo e Monforte de Lemos. Galician Health Service. Pza. Ferrol 11. 27001 Lugo. Spain; Stomatology Department. School of Medicine and Dentristry. University of Santiago de Compostela. Entrerríos s/n. 15782. Santiago de Compostela. A Coruña. Spain
  2. 2 Stomatology Department. School of Medicine and Dentristry. University of Santiago de Compostela. Entrerríos s/n. 15782. Santiago de Compostela. A Coruña. Spain
  3. 3 Department of Medicine and Medical-Surgical Specialities. School of Medicine and Health Sciences. University of Oviedo. C/ Julián Clavería s/n. 33006. Oviedo. Spain
Medicina oral, patología oral y cirugía bucal. Ed. inglesa

ISSN: 1698-6946

Ano de publicación: 2016

Volume: 21

Número: 6

Páxinas: 9

Tipo: Artigo

DOI: 10.4317/MEDORAL.21475 DIALNET GOOGLE SCHOLAR lock_openAcceso aberto editor

Outras publicacións en: Medicina oral, patología oral y cirugía bucal. Ed. inglesa


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. 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. 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). 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.

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