Friction heat during self-drilling of an orthodontic miniscrew

Effect of pre-drilling on intraosseous temperature during self-drilling mini-implant placement in a porcine mandible model

“…Matsuoka et al investigated bone temperatures during self-drilling mini-implant placement and found that in a mandible model (cortical thickness, approximately 2 mm) mean temperature change was between 5.0°C (at 50 rpm) and 11.1°C (at 250 rpm) (9). In contrast, handwound screw placement resulted in significantly higher temperature increases in our study (11.8 ± 2.1°C for pilot hole preparation; 11.3 ± 2.4°C without pre-drilling), as compared with the previously reported temperature of 5°C at 50 rpm.…”

“…In the present study, thermocouple sensors were placed at a depth of 5 mm in bone. In contrast, Matsuoka et al used a contact sensor glued on the surface of the cortex (9). Variability between studies might also be attributable in part to the difference in mini-implant products assessed (JEIL Medical Corp. vs. Biodent Co., Ltd., Tokyo, Japan).…”

“…Furthermore, torque and heat during insertion of mini-implants may be associated with early implant loss (8-10). Tachibana et al calculated the optimal pilot hole diameter to ensure optimal insertion torque for self-drilling mini-implants (10), while Matsuoka et al investigated the heat produced during placement of self-drilling mini-implants without pilot hole preparation (9).…”

Selecting the Proper Screw for the Case: Review

“…28 Matsuoka yapmış olduğu çalışmada; "pre-drill" teknikte ortaya çıkan ısının, mini vidanın stabilitesini etkilediğini vurgulamıştır. 29 Yine Eriksson ve ark.nın çalışmasında; "pre-drilling" sırasında ortaya çıkan ısının, mini vida çevresindeki kemik yapımını olumsuz etkilediği rapor edilmiştir. 30 Yapılan çalışmalarda; "drill-free" teknik ile yerleştirilen vidalar daha fazla primer stabilite gös-termiş olsa da kortikal kemiğin yoğun ve kalın olduğu bölgelerde (mandibula ve damak) kullanımı sınırlıdır.…”

Effects of wobbling angle on the stability measures of orthodontic mini-implants during insertion and removal procedures

“…[9][10][11][12][13] Furthermore, lack of experience and improper technique in the manual insertion method may cause the OMI to wobble at the insertion site during the insertion procedure. 7 Wobbling can increase the amount of reduction of the cortical bone, cause microcrack or damage, and decrease the mechanical retention between the OMI and bone, which will eventually compromise the primary stability of the OMIs.…”