The primary stability in tapered implants may be more dependent on bone density than on the reduction of the diameter of the final perforation (under drilling) Sierra-Rebolledo A, Allais-Leon M, Maurette-O’Brien P, Gay-Escoda C. Primary…
The primary stability in tapered implants may be more dependent on bone density than on thereduction of the diameter of the final perforation (under drilling). Sierra-Rebolledo A, Allais-Leon M, Maurette-O’Brien P, Gay-Escoda C. Primary apical stability of tapered implants through reduction of final drilling dimensions in different bone density models: a biomechanical study. Implant Dent.2016;18. Taper-cylindrical implants with 0.8mm screw pitch caused the least microdamage to the bone in comparison with the other five types of implants during placement of implants. Xu C, Wei Z, Liu N, Sun F, Chen H Lin T et al. The effect of implant shape and screw pitch on microdamage in mandibular bone. Clin Implant Dent Relat Res. 2015;17(2):365-372. Placement of a tapered implant design using tapered drills resulted in higher primary stability than a control implant with subtle tapering using straight drills. Sennerby L, Pagliani L, Petersson A, Verrocchi D, Volpe S, Andersson P. Two different implant designs and impact of related drilling protocols on primary stability in different bone densities: an in vitro comparison study. Int J Oral Maxillofac Implants. 2015;30(3):564-568. Due to the anatomical shape, drilling of the bone is less likely with conical implants. Garber DA, Salama H, Salama MA. Two-stage versus one-stage is there really a controversy? J Periodontol. 2001;72(3):417-421. Tapered implant (Mark IV ) compared to other 4 designs, register higher insertion par, a significant higher ISQ value and maintain a high primary stability even in Type 4 bone. O’Sullivan D, Sennerby L, Meredith N. Measurements comparing the initial stability of five designs of dental implants: a human cadaver study. Clin Implant Dent Relat Res. 2000;2(2):85-92. Immediate provisionalization of single dental implants compares favorably with conventional loading protocols. Long-term data suggest that immediate provisionalization of single dental implants is a viable treatment option. Lang LA, Turkyilmaz I, Edgin WA, Verrett R, Garcia LT. Immediate restoration of single tapered implants with nonoccluding provisional crowns: a 5-year clinical prospective study. Clin Implant Dent Relat Res. 2014;16(2):248-258. • Survival rates revealed no statistically significant difference between Inmediate loading (97.9%) and Early Loading (97.8%), or Conventional Loading (99.3%) in edentulous patients with extended edentulous sites. Preliminary evidence suggests that IL may be equally successful in either the maxilla or mandible Schrott A, Riggi-Heiniger M, Maruo K, Gallucci GO. Implant loading protocols for partially edentulous patients with extended edentulous sites a systematic review and meta-analysis. Int J Oral Maxillofac Implants. 2014;29:239-255. The results, over 36 months, indicate that the variable-thread tapered implant can be used safely and effectively under demanding conditions as an immediate postextraction tooth replacement.
Kolinski ML, Cherry JE, McAllister BS, Parrish KD, Pumphrey DW, Schroering RL. Evaluation of a variable-thread tapered implant in extraction sites with immediate temporization: a 3-year multicenter clinical study. J Periodontol. 2014;85(3):386-394. Immediate loading maxillary tapered implants showed long-term results comparable to implants with delayed loading. Harel N, Piek D, Livne S, Palti A, Ormianer Z. A 10-year retrospective clinical evaluation of immediately loaded tapered maxillary implants. Int J Prosthodont. 2013;26(3):244-249. In the atrophied edentulous sites, tilted placement of tapered implants using our method proves to be a valuable procedure without more complex procedures such as bone grafts. Kawasaki T, Komatsu K, Tsuchiya R. Tilted placement of tapered implants using a modified surgical template. J Oral Maxillofac Surg. 2011;69(6):1642-1650. In the atrophic posterior maxilla, primary stability can readily be achieved with tapered implants, even when the mean residual bone is reduced. Nedir R, Nurdin N, Szmukler-Moncler S, Bischof M. Placement of tapered implants using an osteotome sinus floor elevation technique without bone grafting: 1-year results. Int J Oral Maxillofac Implants. 2009;24(4):727-733. It is advantageous to use conical implants in low density bone. The protocol for preparation of the alveolus for implantation is performed with osteotomes, without drilling. Alves CC, Neves M. Tapered implants: from indications to advantages. Int J Periodontics Restorative Dent. 2009;29(2):161-167. Tapered implants maintain integration and marginal bone levels despite the presence of one or more potentially compromising variables. Ormianer Z, Palti A. Long-term clinical evaluation of tapered multi-threaded implants: results and influences of potential risk factors. J Oral Implantol. 2006;32(6):300-307. The bone quality and not the osteotomy drilling speed seems to influence the implant primary stability. RESULTS: Two-way analysis of variance (ANOVA) used for this study found that the drilling speed used to create the osteotomies appeared to have no significant impact on primary stability. Almeida KP, Delgado-Ruiz R, Carneiro LG, Leiva AB, Calvo-Guirado JL, Gómez-Moreno G et al. Influence of drilling speed on stability of tapered dental implants: An ex vivo experimental study. Int J Oral Maxillofac Implants. 2016;31(4):795-798..