Effect of ultrasonic tip designs on intraradicular post removal
Aguiar Anny Carine Barros, de Meireles Daniely Amorim, Marques Andre Augusto Franco, Junior Emilio Carlos Sponchiado, Garrido Angela Delfina Bitencour, Garcia Lucas da Fonseca Roberti,
소속 상세정보
( Aguiar Anny Carine Barros ) - Federal University of Amazonas School of Dentistry Department of Endodontics
( de Meireles Daniely Amorim ) - Federal University of Amazonas School of Dentistry Department of Endodontics
( Marques Andre Augusto Franco ) - Amazonas State University School of Dentistry Department of Endodontics
( Junior Emilio Carlos Sponchiado ) - Federal University of Amazonas School of Dentistry Department of Endodontics
( Garrido Angela Delfina Bitencour ) - Federal University of Amazonas School of Dentistry Department of Endodontics
( Garcia Lucas da Fonseca Roberti ) - University of Sao Paulo Ribeirao Preto School of Dentistry Department of Dental Materials and Prosthodontics
KMID : 1034420140390040265
Abstract
Objectives: To evaluate the effect of different ultrasonic tip designs on intraradicular post removal.
Materials and Methods: The crowns of forty human canine teeth were removed, and after biomechanical preparation and filling, the roots were embedded in acrylic resin blocks. The post spaces were made, and root canal molding was performed with self-cured acrylic resin. After casting (Cu-Al), the posts were cemented with zinc phosphate cement. The specimens were randomly separated into 4 groups (n = 10), as follows: G1 - no ultrasonic vibration (control); G2 - ultrasonic vibration using an elongated cylindrical-shaped and active rounded tip; G3 - ultrasonic vibration with a flattened convex and linear active tip; G4 - ultrasonic vibration with active semicircular tapered tip. Ultrasonic vibration was applied for 15 seconds on each post surface and tensile test was performed in a Universal Testing Machine (Instron 4444 - 1 mm/min).
Results: G4 presented the highest mean values, however, with no statistically significant difference in comparison to G3 (P > 0.05). G2 presented the lowest mean values with statistically significant difference to G3 and G4 (P < 0.05).
Conclusions: Ultrasonic vibration with elongated cylindrical-shaped and active rounded tip was most effective in reducing force required for intraradicular post removal.
키워드
Post removal; Tip design; Ultrasonic device
원문 및 링크아웃 정보
등재저널 정보