Abstract
Sinus floor augmentation is an effective method to regain bone height for the successful insertion of dental implants into the posterior maxilla. The aim of the study was to evaluate the behaviour of augmentation material following simultaneous or staged dental implant insertion, as visible on digital panoramic radiographs using the GNU Image Manipulation Program (GIMP). We evaluated one-stage (group 1) or two-stage (group 2) maxillary sinus floor augmentation procedures in 19 patients, using a high temperature-treated bovine porous hydroxyapatite material. Digital panoramic radiographic measurements were captured pre-operatively in both groups, pre-implant insertion in group 2, and immediately postoperatively and 6 months postoperatively in both groups. Forty parallel-walled bone-level implants were placed in a one-stage (n=18) or two-stage (n=22) protocol, with a mean residual bone height of 4.9±1.8 mm and survival rate of 100%. Mean bone height increased by 8.6±1.6 mm immediately post-implantation and by 7.9±1.7 mm after 6 months. Mean distal and mesial bone losses after abutment connection were 0.42±0.24 mm and 0.34±0.27 mm, respectively. No significant intergroup or intragroup differences between simultaneous and staged dental implant procedures were found. Our results show that the histogram tool in GIMP is useful for documentation of the area of the augmentation material used in maxillary sinus floor augmentation.
Highlights
Dental implants are widely used and have a good long-term survival rate
Maxillary sinus floor augmentation is a reliable method for increasing bone height in the posterior maxilla (Del Fabbro et al, 2008; Danesh-Sani et al, 2016), and can be performed via either of two approaches; external sinus lift (Boyne and James, 1980) or internal sinus lift (Summers, 1994), with or without use of augmentation material (Silva et al, 2016)
By signing a formal anamnesis questionnaire, the patients agreed the use of their data in this study which were conducted according to the World Medical Association (WMA) Declaration of Helsinki – Ethical Principles for Medical Research
Summary
Dental implants are widely used and have a good long-term survival rate (E. Jung et al, 2012; Pjetursson et al, 2012). Maxillary sinus floor augmentation is a reliable method for increasing bone height in the posterior maxilla (Del Fabbro et al, 2008; Danesh-Sani et al, 2016), and can be performed via either of two approaches; external sinus lift (lateral access) (Boyne and James, 1980) or internal sinus lift (transalveolar access) (Summers, 1994), with or without use of augmentation material (Silva et al, 2016). When an augmentation material is required, an allograft, alloplastic material, or xenograft can be used (Esposito et al, 2014) to avoid the disadvantages of autogenous bone, which include increased morbidity, limited availability, and high volumetric change (Papageorgiou et al, 2016; Wu et al, 2016).
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