Early functional loading of conical Brånemark implants in the edentulous mandible: A 12-month follow-up clinical report

Stress on implant-supported fixed prostheses with different numbers of abutments after the application of acrylic resin

“…16,17 In addition, the distribution of the implants in the bone arch may be more important than the number of implants because it is the predominant factor in the formation of an appropriate support polygon. 18,21 In this study, less variability in tension was found in the group with 5 abutments without veneer. The lack of homogeneity in the results in the other groups of this experiment can be explained by the processing method of the specimens.…”

“…16 The classic protocol of placing 5 implants in the interforaminal region of the mandible has been replaced by the use of 4 implants for the fixation of complete prostheses. [16][17][18][19][20] However, further investigation is needed to determine if clinical and/or biomechanical failures and complications, such as cracks in the esthetic veneer and/ or loosening of the screws will occur in the long term. 16 According to some authors, a decrease in the number of abutments from 5 to 4 does not significantly increase the tension; however, the use of 5 implants allows for greater predictability in the case of an eventual failure of one of the implants.…”

“…These studies recommend the use of 4 implants for the same prosthetic solution, and this recommendation has become widespread because the tension distribution is similar when either 4 or 5 implants are used. [16][17][18][19][20] The distribution of the implants in the bone arch has been indicated as a more important factor than the number of implants because distribution is the predominant factor in forming an appropriate support polygon. 19,21 Studies have demonstrated that the distribution of tension is similar when either 5 or 4 implants are used.…”

“…16,17,20,22 Thus, the fixation of 4 implants has been increasingly used to rehabilitate patients with an edentulous arch. [18][19][20] The design and material of the prosthetic structure also influence the load of the dental implants and the deformation of the bone tissue. The prosthesis, which is applied over the implant, may consist of different materials, such as gold alloy, ceramic fused to a noble alloy, porcelain, composite resin, reinforced composite resin, and acrylic resin.…”

Estudo de dois sistemas de reabilitação com implantes submetidos à ativação imediata: análise clínica, radiográfica e da estabilidade, por frequência de ressonância

“…A carga imediata sobre os implantes apresenta, também, altas taxas de sobrevida e grande previsibilidade em alcançar a osseointegração (SCHNITMAN et al, 1990;SALAMA et al, 1995;PIATTELLI et al, 1997;TARNOW;EMTIAZ;CLASSI 1997;SCHNITMAN et al, 1997;RANDOW et al, 1999;GARBER;SALAMA 2001, CHIAPASCO et al, 2001, CHIAPASCO, 2004CHIAPASCO;GATTI, 2007) e, quando praticada no edentulismo total em mandíbula anterior, é suportada por vasta literatura (SALAMA et al, 1995;SCHNITMANN et al, 1997;TARNOW;EMTIAZ;CLASSI 1997;RANDOW et al, 1999;BRÅNEMARK et al, 1999;HORIUCHI et al, 2000;CHOW et al, 2001;DE BRUYN et al, 2001;CHIAPASCO et al, 2001CHIAPASCO et al, , 2007ENGSTRAND et al, 2003;KRONSTRÖM et al, 2003;NOBRE, 2003NOBRE, , 2005MALO et al, 2006;van STEENBERGHE et al, 2004;ATTARD;ZARB, 2004;ENGQUIST et al, 2005;BALSHI et al, 2005 Dos fatores envolvidos para a indicação da carga imediata, a estabilidade inicial é o fator determinante (HORIUCHI et al, 2000), sendo consenso que para a obtenção de altos índices de sucesso, em técnicas de carga imediata, exista a necessidade de uma boa estabilidade primária …”