Mechanical Properties of Mini-Implants Used in Extra-Radicular Anchorage
Pesqui. bras. odontopediatria clín. integr
; 23: e210155, 2023. tab, graf
Article
in En
| LILACS, BBO
| ID: biblio-1507020
Responsible library:
BR1264.1
ABSTRACT
ABSTRACT Objective:
To evaluate the mechanical properties of mini-implants (MIs) manufactured from stainless steel and compare them with conventional titanium-aluminum-vanadium alloy MIs. Material andMethods:
The following groups were formed G1 (n=24), 8×1.5 mm steel MIs; G2 (n=24), 12×2.0 mm steel MIs; and G3 (n=24), 10×1.5 mm titanium MIs. The 72 MIs were inserted in the infra zygomatic crest region of the maxilla and retromolar trigone in the jaw of 10 pigs. Pull-out, insertion torque, fracture and percussion tests were performed in order to measure the tensile strength, primary stability and fracture strength of MIs. A digital torque gauge was used to measure insertion and fracture torque, a universal mechanical testing machine was used for pull-out testing and a periotest device was used to measure the micromovement of MIs. For morphological and MI component evaluation, scanning electron microscopy (SEM) was performed. D'Agostino & Pearson, Kruskal-Wallis, and Dunn post-hoc and normality tests were used.Results:
G2 insertion and fracture torques were significantly higher than G1 and G3 insertion and fracture torques (p<0.05). The pull-out and percussion tests presented similar values among the groups. SEM revealed that the fracture point was predominantly on the fourth thread for steel MIs (G1 and G2) and on the seventh thread for titanium-aluminum-vanadium MIs (G3).Conclusion:
The mechanical properties of stainless steel MIs are superior to those of titanium-aluminum-vanadium alloy MIs.Key words
Full text:
1
Collection:
01-internacional
Database:
BBO
/
LILACS
Main subject:
Stainless Steel
/
Tensile Strength
/
Titanium
/
Orthodontic Anchorage Procedures
Type of study:
Evaluation_studies
Limits:
Animals
Language:
En
Journal:
Pesqui. bras. odontopediatria clín. integr
Journal subject:
ODONTOLOGIA
Year:
2023
Document type:
Article
Affiliation country:
Brazil
Country of publication:
Brazil