Enamel surface evaluation after removal of orthodontic composite remnants by intraoral sandblasting: a 3-dimensional surface profilometry study.
BACKGROUND
The purpose of this study was to determine the utility of sandblasting to remove composite remnants after orthodontic bracket debonding.


METHODS
The sample consisted of 20 human premolars extracted for orthodontic purposes. The buccal surface of each premolar was divided into 3 parts: the upper half (control surface group, CS), the lower half left (LS group), and the lower half right (SS group). A composite resin paste (volume, 5 x 3 x 1 mm3) was bonded onto the LS and SS surfaces. Then it was removed by using 1 of 2 methods: low-speed handpiece with tungsten carbide bur in the LS group and sandblasting in the SS group. Temperature change and removal time were recorded, and surface profiles were examined with 3-dimensional profilometry.


RESULTS
An independent t test showed a statistically significant difference in temperature change between the LS and SS groups (P <.01). ANOVA showed no significant difference in surface profile between the LS and SS groups (P >.5).


CONCLUSIONS
The results suggest that intraoral sandblasting might be an alternative to rotatory instruments for resin remnant removal after orthodontic bracket debonding.
Kim
Seong-Sik
SS
Department of Orthodontics, College of Dentistry, Pusan National University, Pusan, Korea.
Park
Woo-Kyung
WK
Son
Woo-Sung
WS
Ahn
Hyung-Soo
HS
Ro
Jung-Hoon
JH
Kim
Yong-Deok
YD
D020906:Air Abrasion, Dental; D000704:Analysis of Variance; D001641:Bicuspid; D017005:Dental Debonding / Q000379:methods*; D003743:Dental Enamel; D006801:Humans; D021621:Imaging, Three-Dimensional; D016910:Orthodontic Brackets; D018709:Statistics, Nonparametric; D013499:Surface Properties