Shear strength of brackets bonded to anterior and posterior teeth

M. Knoll; A. J. Gwinnett; M. S. Wolff

doi:10.1016/0002-9416(86)90003-5

Shear strength of brackets bonded to anterior and posterior teeth

M. Knoll, A. J. Gwinnett, M. S. Wolff

Cariology and Comprehensive Care

Research output: Contribution to journal › Article › peer-review

Abstract

A study was undertaken to determine the maximum shear strength of brackets bonded to anterior and posterior teeth. Brackets were bonded to two groups comprising 12 incisor and 12 molar teeth. After storage in water at 37° C for 10 days, each bracket was tested to failure in a shear mode in a Instron machine. The mean value for the incisors was 164.3 ± 35.1 kg /cm² (16.1 ± 3.4 MPa) and 115.7 ± 41.1 kg/cm² (11 ± 4.0 MPa) for molars. These values, analyzed in a two-tailed test, were statistically different at the 0.01 level of confidence. It was concluded that differences in etching patterns do not necessarily affect shear bond strength and that the predominantly weak link in the bonding chain was at the bracket/resin interface. The lower values for molar teeth may relate to adaptation of the bracket and nonuniform resin thickness.

Original language	English (US)
Pages (from-to)	476-479
Number of pages	4
Journal	American Journal of Orthodontics
Volume	89
Issue number	6
DOIs	https://doi.org/10.1016/0002-9416(86)90003-5
State	Published - Jun 1986

Keywords

Bonding
bond strength
brackets
incisors
molars

ASJC Scopus subject areas

General Dentistry

Access to Document

10.1016/0002-9416(86)90003-5

Cite this

@article{cf309ec44ce64518aef7ae45f770b945,

title = "Shear strength of brackets bonded to anterior and posterior teeth",

abstract = "A study was undertaken to determine the maximum shear strength of brackets bonded to anterior and posterior teeth. Brackets were bonded to two groups comprising 12 incisor and 12 molar teeth. After storage in water at 37° C for 10 days, each bracket was tested to failure in a shear mode in a Instron machine. The mean value for the incisors was 164.3 ± 35.1 kg /cm2 (16.1 ± 3.4 MPa) and 115.7 ± 41.1 kg/cm2 (11 ± 4.0 MPa) for molars. These values, analyzed in a two-tailed test, were statistically different at the 0.01 level of confidence. It was concluded that differences in etching patterns do not necessarily affect shear bond strength and that the predominantly weak link in the bonding chain was at the bracket/resin interface. The lower values for molar teeth may relate to adaptation of the bracket and nonuniform resin thickness.",

keywords = "Bonding, bond strength, brackets, incisors, molars",

author = "M. Knoll and Gwinnett, {A. J.} and Wolff, {M. S.}",

year = "1986",

month = jun,

doi = "10.1016/0002-9416(86)90003-5",

language = "English (US)",

volume = "89",

pages = "476--479",

journal = "American Journal of Orthodontics",

issn = "0002-9416",

publisher = "Elsevier Inc.",

number = "6",

}

TY - JOUR

T1 - Shear strength of brackets bonded to anterior and posterior teeth

AU - Knoll, M.

AU - Gwinnett, A. J.

AU - Wolff, M. S.

PY - 1986/6

Y1 - 1986/6

N2 - A study was undertaken to determine the maximum shear strength of brackets bonded to anterior and posterior teeth. Brackets were bonded to two groups comprising 12 incisor and 12 molar teeth. After storage in water at 37° C for 10 days, each bracket was tested to failure in a shear mode in a Instron machine. The mean value for the incisors was 164.3 ± 35.1 kg /cm2 (16.1 ± 3.4 MPa) and 115.7 ± 41.1 kg/cm2 (11 ± 4.0 MPa) for molars. These values, analyzed in a two-tailed test, were statistically different at the 0.01 level of confidence. It was concluded that differences in etching patterns do not necessarily affect shear bond strength and that the predominantly weak link in the bonding chain was at the bracket/resin interface. The lower values for molar teeth may relate to adaptation of the bracket and nonuniform resin thickness.

AB - A study was undertaken to determine the maximum shear strength of brackets bonded to anterior and posterior teeth. Brackets were bonded to two groups comprising 12 incisor and 12 molar teeth. After storage in water at 37° C for 10 days, each bracket was tested to failure in a shear mode in a Instron machine. The mean value for the incisors was 164.3 ± 35.1 kg /cm2 (16.1 ± 3.4 MPa) and 115.7 ± 41.1 kg/cm2 (11 ± 4.0 MPa) for molars. These values, analyzed in a two-tailed test, were statistically different at the 0.01 level of confidence. It was concluded that differences in etching patterns do not necessarily affect shear bond strength and that the predominantly weak link in the bonding chain was at the bracket/resin interface. The lower values for molar teeth may relate to adaptation of the bracket and nonuniform resin thickness.

KW - Bonding

KW - bond strength

KW - brackets

KW - incisors

KW - molars

UR - http://www.scopus.com/inward/record.url?scp=0022729453&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022729453&partnerID=8YFLogxK

U2 - 10.1016/0002-9416(86)90003-5

DO - 10.1016/0002-9416(86)90003-5

M3 - Article

C2 - 3521300

AN - SCOPUS:0022729453

SN - 0002-9416

VL - 89

SP - 476

EP - 479

JO - American Journal of Orthodontics

JF - American Journal of Orthodontics

IS - 6

ER -

Shear strength of brackets bonded to anterior and posterior teeth

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this