Assessment of Dental Implant Stability in Areas Previously Submitted to Maxillary Sinus Elevation

Abstract

This study aimed to compare the primary and secondary stability, measured by resonance frequency analysis (RFA), in implants of different lengths installed in areas submitted to maxillary sinus lift. Correlation between RFA and implant insertion torque was also assessed. Twenty implants of 9 and 11 mm were inserted in areas submitted to maxillary sinus lift. The insertion torque was measured by the Bien Air motor. Osstell, through RFA, determined the implant stability quotient (ISQ) 2 times: the day of implant installation (T1) and 90 days after implant installation (T2). No differences were observed in the ISQ between T1 and T2 when the 20 implants were grouped, nor when the 9 mm implants were evaluated separately. In contrast, when the 11 mm values were evaluated separately, the ISQ was significantly higher in T2 than in T1 ( P < .05). In T1, 9 mm implants had a higher ISQ than 11 mm ones ( P < .05), whereas in T2, the implants of 11 mm showed a higher ISQ than did the 9 mm implants ( P < .05). There was no difference in insertion torque between 9 and 11 mm implants ( P > .05), nor was there a correlation between ISQ and insertion torque ( P > .05). In conclusion, longer implants (11 mm) presented a significant increase in ISQ values during the healing period when installed in areas previously submitted to maxillary sinus lift. This phenomenon was not observed for shorter implants (9 mm). Finally, no correlation was observed between ISQ and insertion torque.

Effect of amount of biomaterial used for maxillary sinus lift on volume maintenance of grafts

“…All surgeries were performed by clinical specialists according PUCMINAS Implant Dentistry Department protocol ( 11 , 12 ). After administering local anesthesia with lidocaine 1:100.000 (Alphacaína® - DFL) a horizontal incision was made on the crest of the alveolar ridge and two vertical incisions beyond the gingival mucus line.…”

Importância do tecido ceratinizado para o sucesso na implantodontia

“…Após a instalação dos implantes, ocorre uma sequência de eventos na interface osso/implante, que são relevantes para o sucesso do procedimento (Sciasci et al, 2018). Dentre esses eventos, nós podemos citar a estabilidade primária, que está associada ao embricamento mecânico do implante com o osso circundante no ato da instalação, (Javed, Ahmed, Crespi, & Romanos, 2013) e posteriormente a estabilidade secundária, proporcionada pela deposição de osso recém-formado ao redor do corpo do implante (Silva et al, 2018). A qualidade desta estabilidade, no entanto, parece ser altamente dependente da estabilidade primária (Zita Gomes Vasconcelos, Lopes Guerra, de Almeida, & de Campos Felino, 2017).…”

How the use of xenogeneic grafts can impact the relationship with some social groups and blood donor patients

“…widely used for alveolar bone reconstruction procedures, with predictable results, and longitudinal follow-up associated with implant rehabilitation and periodontal treatment. [6][7][8][9][10][11][12] However, the demand for these biomaterials impact in a situation, according to different International Health Organizations, that regulate blood donations and transfusions-Food and Drug Administration (FDA-United States), European Commission Public Health (ECPH-Europe), and World Health Organization (WHO). Perhaps the knowledge about the WHO, FDA, and ECPH regulations many times presents different points of view, these organizations are unanimous in relation to the use of xenogeneic biomaterial, that the blood and derivate donation from patients who received xenografts for alveolar reconstructions are categorized as definitively ineligible for this donation.…”