Influence of the position of the antrostomy in sinus floor elevation assessed with cone-beam computed tomography: A randomized clinical trial

Journal of Investigative and Clinical Dentistry
Shunsuke KawakamiDaniele Botticelli

Abstract

The aim of the present study was to evaluate dimensional variations of augmented sinus volumes after sinus floor elevation using a lateral approach placing the antrostomy close to the sinus floor or more cranially to it. Twenty-four healthy volunteers in need of sinus floor elevation were included in the study. The lateral approach was adopted placing the antrostomy randomly either close to the level of the sinus floor (group A) or approximately 3-4 mm cranially (group B). Cone-beam computed tomography (CBCT) was done before surgery (T0) and after 1 week (T1) and 9 months (T2), and analyses on dimensional variations were performed. CBCT of 10 patients per group were analyzed. At T1, the sinus floor was found to be elevated by 9.8 ± 2.1 mm in group A and 10.9 ± 1.9 mm in group B. At T2, shrinkage of 2.0 ± 1.7 mm in group A and 1.4 ± 2.5 mm in group B was observed. The area was reduced approximately 18-24% between T1 and T2. The sinus mucosa width increased by 4.3-5 mm between T0 and T1, and regained the original dimensions at T2. The more cranial the antrostomy, the greater the augmentation height after 9 months.

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Citations

Jun 15, 2020·Oral and Maxillofacial Surgery·Alessandro ScalaDaniele Botticelli
Jul 23, 2019·Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft·Shunsuke KawakamiShunsuke Baba
Feb 6, 2021·Oral and Maxillofacial Surgery·Shingo KatoIdelmo Rangel-Garcia
Jul 3, 2021·Dentistry Journal·Michael Medeiros CostaSamuel Porfirio Xavier

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