Evaluation of the primary stability in dental implants placed in low density bone with a new drilling technique, Osseodensification: an in vitro study.

BACKGROUND: Primary stability is an important key determinant of implant osseointegration. We investigated approaches to improve primary implant stability using a new drilling technique termed osseodensification (OD), which was compared with the conventional under-drilling (UD) method utilized for low-density bones. MATERIAL AND METHODS: We placed 55 conical internal connection implants in each group, in 30 low-density sections of pig tibia. The implants were placed using twist drill bits in both groups; groups Under Drilling (UD) and Osseodensification (OD) included bone sections subjected to conventional UD and OD drilling, respectively. Before placing the implants, we randomized the bone sections that were to receive these implants to avoid sample bias. We evaluated various primary stability parameters, such as implant insertion torque and resonance frequency analysis (RFA) measurements. RESULTS: The results showed that compared with implants placed using the UD technique, those placed using the OD technique were associated with significantly higher primary stability. The mean insertion torque of the implants was 8.87±6.17 Ncm in group 1 (UD) and 21.72±17.14 Ncm in group 2 (OD). The mean RFA was 65.16±7.45 ISQ in group 1 (UD) and 69.75±6.79 ISQ in group 2 (OD). CONCLUSIONS: The implant insertion torque and RFA values were significantly higher in OD group than in UD. Therefore, compared with UD, OD improves primary stability in low-density bones (based on torque and RFA measurements).

Revisión bibliográfica de los artículos publicados de cirugía bucal en el año 2005 / Literature review of oral surgery articles published in 2005

Introducción. El objetivo de este trabajo es revisar los artículos decirugía oral publicados en el año 2005.Material y método. Tres revisores han realizado una búsqueda en las revistasindexadas en Medline, clasificando los artículos de acuerdo a diferentes temas.Los criterios de búsqueda fueron: artículos de especial interés publicadosen revistas de impacto nacional e internacional, que actualizaran cualquierade los temas señalados.Resultados. Los artículos más interesantes sobre cirugía bucal publicadosen el año 2005 son: 11 artículos sobre quistes, 35 de tumores de los maxilaresy tejidos blandos, 4 de infecciones de los maxilares, 11 de cirugía periapical,15 de patología del tercer molar, 5 de inclusiones dentarias, 11 detransplantes y reimplantes dentarios, 5 de fármacos y 3 artículos de otrostemas.Conclusión. Aportar a otros investigadores una rápida identificación de losartículos más importantes de cirugía bucal publicados en el año 2005(AU)

Introduction. Oral surgery articles published in 2005 werereviewed.Material and method. Three reviewers searched journals indexedin Medline and classified the articles by topic. The search criteriawere: articles of special interest, published in national andinternational impact journals, that updated any of the topics selected.Results. The most interesting articles on oral surgery published in2005 were: 11 articles on cysts, 35 on jaw and soft tissues tumors,4 jaw infections, 11 periapical surgery, 15 third molar pathology,5 dental impaction, 11 dental transplantation and reimplantation,5 drugs, and 3 articles on other topics.Conclusion. The authors offer other researchers a quick overview ofthe most important articles in oral surgery published in 2005(AU)