ABSTRACT
Resumen El control micro-biológico y el selle tridimensional del conducto radicular son factores escenciales para alcanzar el éxito del tratamiento endodóntico. Actualmente la tasa de éxito para la micro-cirugía endodóntica es acerca del 92% cuando esta es realizada con el uso del microscopio como coadyudante en los procedimientos de conformación quimico-mecánica y selle del tercio apical. En consecuencia, el objetivo de este artículo fue hacer una revisión actualizada de todos los procedimientos clínicos retropreparación y desinfección del conducto radicular en micro-cirugía endodóntica, la cual fue soportada con la mejor evidencia disponible a la fecha.
Abstract The micro-biological control and three-dimensional sealing of the root canal are the determining factors to achieve the success of endodontic treatment. Currently, the success rate for endodontic microsurgery is 92% when using the microscope as a coadjuvant in the processes of chemical-mecanical preparation and filling of the apical third. Consequently, the objective of this article was to update all the clinical procedures of retropreparation and disinfection of the root canal in endodontic microsurgery, which was supported with the best evidence available to date.
ABSTRACT
Objective:To compare quantitatively the quality of the canal isthmus retropreparation among three kinds of ultrasonic ret-rotips.Methods:1 20 maxillary bicuspid teeth with two canals and an isthmus were randomly assigned to 3 groups(n=40).The canal isthmus retropreparation were made respectively using ultrasonic niti tip RE2,diamond tip Berutti and #25K file.Image processing and analysis system were used to measure the preoperative and postoperative parameters for further evaluation.Results:The cutting volume of ultrasonic niti tip RE2 group was significantly less than those of other two groups(P<0.05).Conclusion:Ultrasonic niti tip RE2 is feasible in the canal isthmus retropreparation.
ABSTRACT
Objective:To compare the quality of the canal isthmus retropreparation among three ultrasonic retrotips.Methods:120 maxillary bicuspid teeth with 2 canals and an isthmus were randomly assigned to 3 groups(n =40).The canal isthmus were retro-preparated by ultrasonic Ni-Ti tip RE2,diamond tip Berutti and #25K file respectively.The quality of cavity margin,the number and type of the micro-cracks were evaluated by SEM.Data were statistically analysed by Kruskal Wallis Test of SPSS 13.0.Results:The cavity margin quality of ultrasonic Ni-Ti tip RE2 group was superior to that of other 2 groups(P =0.003);The number of micro-crack in Ni-Ti tip RE2 group was less than that of other 2 groups(P =0.003).The type of micro-cracks has no significant difference among the 3 groups(P =0.830).Conclusion:Ultrasonic Ni-Ti tip RE2 is feasible in the canal isthmus retropreparation.
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Objective:To compare the quality of root-end preparation quantitatively between ultrasonic retrotips and traditional slow-speed handpiece. Methods: 27 maxillary second bicuspid teeth with two canals and an isthmus were randomly assigned to 3 groups.Root-end preparations were made respectively using ultrasonic diamond tip Berutti and niti tip RE2, ultrasonic 40~#K file and slow-speed handpiece with No.2 round bur. Image processing and analysis system were used to measure the preoperation and postoperation parameters for further evaluating the difference between the two techniques. Results: The cutting volume of ultrasonic instruments was less than slow-speed handpiece(P<0.000 1). Conclusion: Ultrasonic instrument is better in the root-end preparation than traditional slow-speed handpiece.
ABSTRACT
Objective:To compare the quality of root-end preparation quantitatively between ultrasonic retrotips and traditional slow-speed handpiece.Methods:27 maxillary second bicuspid teeth with two canals and an isthmus were randomly assigned to 3 groups.Root-end preparations were made respectively using ultrasonic diamond tip Berutti and niti tip RE2,ultrasonic #40K file and slow-speed handpiece with No.2 round bur.Image processing and analysis system were used to measure the preoperation and postoperation parameters for further evaluating the difference between the two techniques.Results:The cutting volume of ultrasonic instruments was less than slow-speed handpiece(P
ABSTRACT
Objective:To evaluate the effect of retrograde preparation by using slow-speed handpiece or by ultrasonic tips.Methods:Forty-eight extracted premolars were inspected with Scanning Electron Microscope for the minimum dentine thickness recorded after preparation of root-end cavities by low-speed handpiece and ultrasonic instrument respectively.Results:By using slow-speed handpiece,the minimum dentine thickness recorded after the preparation of root-end cavities was 0.15 mm;whereas that was 0.82 mm and 0.76 mm by ultrasonic instrument with S12 9D and S12 9 respectively(handpiece vs ultrosonic instrument,P