Tomographic Assessment on the Influence of the Use of a Collagen Membrane on Dimensional Variations to Protect the Antrostomy After Maxillary Sinus Floor Augmentation: A Randomized Clinical Trial.

Imai, Hideki; Lang, Niklaus Peter; Ferri, Mauro; Hirota, Atsuya; Apaza Alccayhuaman, Karol Al; Botticelli, Daniele (2020). Tomographic Assessment on the Influence of the Use of a Collagen Membrane on Dimensional Variations to Protect the Antrostomy After Maxillary Sinus Floor Augmentation: A Randomized Clinical Trial. The international journal of oral & maxillofacial implants, 35(2), pp. 350-356. Quintessence Publishing 10.11607/jomi.7843

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PURPOSE

To evaluate the dimensional variations after elevation of the maxillary sinus floor and the healing of the antrostomy left unprotected or protected by a collagen membrane.

MATERIALS AND METHODS

Twenty patients were included in the study. After the elevation of the sinus mucosa, natural bovine bone was grafted into the elevated space. In 10 randomly selected patients, a native collagen membrane made of porcine corium was placed on the antrostomy (membrane group). In the other 10 patients, the antrostomy was left uncovered (no-membrane group). Cone beam computed tomography (CBCT) images were taken for all patients before surgery (T0), 1 week after sinus floor augmentation (T1), and after 9 months of healing (T2), and evaluations of dimensional variations over time of soft and hard tissues were performed.

RESULTS

At T1, the elevation of the sinus floor in the middle aspect was 12.5 ± 3.8 mm and 11.9 ± 3.6 mm in the membrane and no-membrane groups, respectively. At T2, the reduction in height of the elevated space was 0.6 ± 0.9 mm and 0.8 ± 0.8 mm in the membrane and no-membrane groups, respectively. The elevated area decreased between ~10% and 11% in the membrane group and between ~15% to 20% in the no-membrane group. However, no statistically significant differences were found.

CONCLUSION

The use of a collagen membrane to cover the antrostomy after sinus floor elevation did not produce significant clinical effects on dimensional variations over time.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Craniomaxillofacial Surgery 04 Faculty of Medicine > School of Dental Medicine > Department of Periodontology 04 Faculty of Medicine > School of Dental Medicine > Periodontics Research
UniBE Contributor:	Lang, Niklaus Peter
Subjects:	600 Technology > 610 Medicine & health
ISSN:	1942-4434
Publisher:	Quintessence Publishing
Language:	English
Submitter:	Doris Burri
Date Deposited:	17 Dec 2020 11:06
Last Modified:	05 Dec 2022 15:43
Publisher DOI:	10.11607/jomi.7843
PubMed ID:	32142572
URI:	https://boris.unibe.ch/id/eprint/149739