Analysis of efficacy of functional appliances on mandibular growth

Jean Y. Chen, Leslie A. Will, Richard Niederman

Research output: Contribution to journalArticle

Abstract

The purpose of this study was to examine the hypothesis that functional appliances enhance mandibular growth in the treatment of skeletal Class II malocclusions. We systematically reviewed previously published randomized controlled trials. A MEDLINE search strategy for the years 1966 to 1999 was developed and implemented. Six articles meeting validity standards were evaluated for 12 clinical measures. The following linear measures were assessed: condylion-pogonion (Co-Pg), articulare-pogonion (Ar-Pg), condyliongnathion (Co-Gn), articulare-gnathion (Ar-Gn), sella-gonion (S-Go), articulare-gonion (Ar-Go), and condyliongonion (Co-Go). Two angular parameters, sella-nasion-B point (SNB) and lower incisal angle (LIA), were also measured. Three horizontal measurements were also variably used in the studies examined: gonion-menton (Go-Me), pogonion to N (Pg to N), and gonion-pogonion (Go-Pg). For Co-Pg, Co-Gn, SNB, LIA, and other horizontal measurements, we found no significant difference between the untreated control group and the group treated with functional appliances. However, for Ar-Pg and Ar-Gn, there was a significant difference between the control and the treated groups. Although these appliances can be used for other purposes, these results suggest the need to reevaluate functional appliance use for mandibular growth enhancement. These results complement those of quasi-experimental studies with discriminant analysis but differ from nonsystematic reviews that provide qualitative summaries.

Fingerprint

Control Groups
Malocclusion
Discriminant Analysis
Growth
MEDLINE
Randomized Controlled Trials
Non-Randomized Controlled Trials

ASJC Scopus subject areas

  • Dentistry(all)
  • Surgery

Cite this

@article{160f4ad853444b26be4cb3d2253fae49,
title = "Analysis of efficacy of functional appliances on mandibular growth",
abstract = "The purpose of this study was to examine the hypothesis that functional appliances enhance mandibular growth in the treatment of skeletal Class II malocclusions. We systematically reviewed previously published randomized controlled trials. A MEDLINE search strategy for the years 1966 to 1999 was developed and implemented. Six articles meeting validity standards were evaluated for 12 clinical measures. The following linear measures were assessed: condylion-pogonion (Co-Pg), articulare-pogonion (Ar-Pg), condyliongnathion (Co-Gn), articulare-gnathion (Ar-Gn), sella-gonion (S-Go), articulare-gonion (Ar-Go), and condyliongonion (Co-Go). Two angular parameters, sella-nasion-B point (SNB) and lower incisal angle (LIA), were also measured. Three horizontal measurements were also variably used in the studies examined: gonion-menton (Go-Me), pogonion to N (Pg to N), and gonion-pogonion (Go-Pg). For Co-Pg, Co-Gn, SNB, LIA, and other horizontal measurements, we found no significant difference between the untreated control group and the group treated with functional appliances. However, for Ar-Pg and Ar-Gn, there was a significant difference between the control and the treated groups. Although these appliances can be used for other purposes, these results suggest the need to reevaluate functional appliance use for mandibular growth enhancement. These results complement those of quasi-experimental studies with discriminant analysis but differ from nonsystematic reviews that provide qualitative summaries.",
author = "Chen, {Jean Y.} and Will, {Leslie A.} and Richard Niederman",
year = "2002",
doi = "10.1067/mod.2002.126730",
language = "English (US)",
volume = "122",
pages = "470--476",
journal = "American Journal of Orthodontics and Dentofacial Orthopedics",
issn = "0889-5406",
publisher = "Mosby Inc.",
number = "5",

}

TY - JOUR

T1 - Analysis of efficacy of functional appliances on mandibular growth

AU - Chen, Jean Y.

AU - Will, Leslie A.

AU - Niederman, Richard

PY - 2002

Y1 - 2002

N2 - The purpose of this study was to examine the hypothesis that functional appliances enhance mandibular growth in the treatment of skeletal Class II malocclusions. We systematically reviewed previously published randomized controlled trials. A MEDLINE search strategy for the years 1966 to 1999 was developed and implemented. Six articles meeting validity standards were evaluated for 12 clinical measures. The following linear measures were assessed: condylion-pogonion (Co-Pg), articulare-pogonion (Ar-Pg), condyliongnathion (Co-Gn), articulare-gnathion (Ar-Gn), sella-gonion (S-Go), articulare-gonion (Ar-Go), and condyliongonion (Co-Go). Two angular parameters, sella-nasion-B point (SNB) and lower incisal angle (LIA), were also measured. Three horizontal measurements were also variably used in the studies examined: gonion-menton (Go-Me), pogonion to N (Pg to N), and gonion-pogonion (Go-Pg). For Co-Pg, Co-Gn, SNB, LIA, and other horizontal measurements, we found no significant difference between the untreated control group and the group treated with functional appliances. However, for Ar-Pg and Ar-Gn, there was a significant difference between the control and the treated groups. Although these appliances can be used for other purposes, these results suggest the need to reevaluate functional appliance use for mandibular growth enhancement. These results complement those of quasi-experimental studies with discriminant analysis but differ from nonsystematic reviews that provide qualitative summaries.

AB - The purpose of this study was to examine the hypothesis that functional appliances enhance mandibular growth in the treatment of skeletal Class II malocclusions. We systematically reviewed previously published randomized controlled trials. A MEDLINE search strategy for the years 1966 to 1999 was developed and implemented. Six articles meeting validity standards were evaluated for 12 clinical measures. The following linear measures were assessed: condylion-pogonion (Co-Pg), articulare-pogonion (Ar-Pg), condyliongnathion (Co-Gn), articulare-gnathion (Ar-Gn), sella-gonion (S-Go), articulare-gonion (Ar-Go), and condyliongonion (Co-Go). Two angular parameters, sella-nasion-B point (SNB) and lower incisal angle (LIA), were also measured. Three horizontal measurements were also variably used in the studies examined: gonion-menton (Go-Me), pogonion to N (Pg to N), and gonion-pogonion (Go-Pg). For Co-Pg, Co-Gn, SNB, LIA, and other horizontal measurements, we found no significant difference between the untreated control group and the group treated with functional appliances. However, for Ar-Pg and Ar-Gn, there was a significant difference between the control and the treated groups. Although these appliances can be used for other purposes, these results suggest the need to reevaluate functional appliance use for mandibular growth enhancement. These results complement those of quasi-experimental studies with discriminant analysis but differ from nonsystematic reviews that provide qualitative summaries.

UR - http://www.scopus.com/inward/record.url?scp=0036831954&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036831954&partnerID=8YFLogxK

U2 - 10.1067/mod.2002.126730

DO - 10.1067/mod.2002.126730

M3 - Article

VL - 122

SP - 470

EP - 476

JO - American Journal of Orthodontics and Dentofacial Orthopedics

JF - American Journal of Orthodontics and Dentofacial Orthopedics

SN - 0889-5406

IS - 5

ER -