Abstract
Objectives: The objective of this study was to compare the biomechanical characteristics between two types of self-ligating brackets and conventional metal brackets using finite element analysis of a vertically displaced canine model focusing on the desired force on the canine and undesirable forces on adjacent teeth. Materials and Methods: Three-dimensional finite element models of the maxillary dentition with 1-mm, 2-mm, and 3-mm vertically displaced canines were constructed. Two different self-ligating brackets (In-Ovation C and Smart clip) and a conventional metal bracket (Micro-arch) were modeled. After a 0.016-inch NiTi (0.40 mm, round) wire was engaged, the displacement of each tooth was calculated using x-, y-, and z-coordinates, and the tensile and compressive stresses were calculated. Results: The extrusion and maximal tensile stress of the canine differed little between the three brackets, but the intrusion and minimal compressive stress values of the adjacent teeth differed considerably and were highest in the Smart clip and least in the In-Ovation C. The extrusion and maximal tensile stress of the canine in the 3-mm displacement model was less than that in the 2-mm displacement model, and the intrusion and minimal compressive stress of the adjacent teeth increased with the degree of displacement. Conclusions: Self-ligating brackets were not superior to conventional brackets in leveling a vertically displaced canine. A continuous arch wire may not be recommended for leveling of severely displaced canines whether using self-ligating or conventional brackets.
| Original language | English |
|---|---|
| Pages (from-to) | 102-113 |
| Number of pages | 12 |
| Journal | Orthodontics and Craniofacial Research |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2016 May 1 |
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All Science Journal Classification (ASJC) codes
- Orthodontics
- Surgery
- Oral Surgery
- Otorhinolaryngology
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Biomechanical characteristics of self-ligating brackets in a vertically displaced canine model : A finite element analysis. / Kim, S. J.; Kwon, Y. H.; Hwang, C. J.
In: Orthodontics and Craniofacial Research, Vol. 19, No. 2, 01.05.2016, p. 102-113.Research output: Contribution to journal › Article
TY - JOUR
T1 - Biomechanical characteristics of self-ligating brackets in a vertically displaced canine model
T2 - A finite element analysis
AU - Kim, S. J.
AU - Kwon, Y. H.
AU - Hwang, C. J.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - Objectives: The objective of this study was to compare the biomechanical characteristics between two types of self-ligating brackets and conventional metal brackets using finite element analysis of a vertically displaced canine model focusing on the desired force on the canine and undesirable forces on adjacent teeth. Materials and Methods: Three-dimensional finite element models of the maxillary dentition with 1-mm, 2-mm, and 3-mm vertically displaced canines were constructed. Two different self-ligating brackets (In-Ovation C and Smart clip) and a conventional metal bracket (Micro-arch) were modeled. After a 0.016-inch NiTi (0.40 mm, round) wire was engaged, the displacement of each tooth was calculated using x-, y-, and z-coordinates, and the tensile and compressive stresses were calculated. Results: The extrusion and maximal tensile stress of the canine differed little between the three brackets, but the intrusion and minimal compressive stress values of the adjacent teeth differed considerably and were highest in the Smart clip and least in the In-Ovation C. The extrusion and maximal tensile stress of the canine in the 3-mm displacement model was less than that in the 2-mm displacement model, and the intrusion and minimal compressive stress of the adjacent teeth increased with the degree of displacement. Conclusions: Self-ligating brackets were not superior to conventional brackets in leveling a vertically displaced canine. A continuous arch wire may not be recommended for leveling of severely displaced canines whether using self-ligating or conventional brackets.
AB - Objectives: The objective of this study was to compare the biomechanical characteristics between two types of self-ligating brackets and conventional metal brackets using finite element analysis of a vertically displaced canine model focusing on the desired force on the canine and undesirable forces on adjacent teeth. Materials and Methods: Three-dimensional finite element models of the maxillary dentition with 1-mm, 2-mm, and 3-mm vertically displaced canines were constructed. Two different self-ligating brackets (In-Ovation C and Smart clip) and a conventional metal bracket (Micro-arch) were modeled. After a 0.016-inch NiTi (0.40 mm, round) wire was engaged, the displacement of each tooth was calculated using x-, y-, and z-coordinates, and the tensile and compressive stresses were calculated. Results: The extrusion and maximal tensile stress of the canine differed little between the three brackets, but the intrusion and minimal compressive stress values of the adjacent teeth differed considerably and were highest in the Smart clip and least in the In-Ovation C. The extrusion and maximal tensile stress of the canine in the 3-mm displacement model was less than that in the 2-mm displacement model, and the intrusion and minimal compressive stress of the adjacent teeth increased with the degree of displacement. Conclusions: Self-ligating brackets were not superior to conventional brackets in leveling a vertically displaced canine. A continuous arch wire may not be recommended for leveling of severely displaced canines whether using self-ligating or conventional brackets.
UR - http://www.scopus.com/inward/record.url?scp=84959248558&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84959248558&partnerID=8YFLogxK
U2 - 10.1111/ocr.12119
DO - 10.1111/ocr.12119
M3 - Article
C2 - 26898506
AN - SCOPUS:84959248558
VL - 19
SP - 102
EP - 113
JO - Orthodontics and Craniofacial Research
JF - Orthodontics and Craniofacial Research
SN - 1601-6335
IS - 2
ER -