Three biologic variables modifying faciolingual tooth angulation by straight-wire appliances

Germane, Nicholas; Bentley, Bruce E.; Isaacson, Robert J.

doi:10.1016/0889-5406(89)90350-8

Cited by 127 publications

(90 citation statements)

References 10 publications

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“…Previous determinations of ideal faciolingual inclinations have evaluated facial surface contours by a variety of methods on untreated ideal occlusions, treated occlusions, and tooth positioner setups (28,30). These studies have clearly demonstrated that facial surface contours relative to coronal long axes are subject to normal biologic variation (26,28,30). Hence, the validity of using these surfaces to evaluate faciolingual inclinations has not been established.…”

Section: Discussionmentioning

confidence: 99%

“…However, torque expression is a result of the interaction of many factors: bracket design (12), wire / slot play (engagement angle) (12), mode of ligation, 12 bracket deformation (13), wire stiffness (12,14), magnitude of wire torsion and dimension (13,(15)(16)(17), and wire edge beveling (18)(19)(20)(21)(22). Clinical factors such as initial tooth inclination13 bracket position (14,23), and tooth anatomy (24)(25)(26)(27) are also determinants of torque expression.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Torquing Ability of 0.019” × 0.025” Nickel Titanium and Fiber Composite Archwires -A Cone Beam Computed Tomography Study

Singh¹,

Singh²,

Kannan³

et al. 2016

Iran J Ortho

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of Torquing Ability of 0.019” × 0.025” Nickel Titanium and Fiber Composite Archwires -A Cone Beam Computed Tomography Study

Singh¹,

Singh²,

Kannan³

et al. 2016

Iran J Ortho

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show abstract

“…Yellow circles indicate amounts of gable bends generated by the pliers. Japan), we aligned and leveled with a broad arch form (Ormco, Glendora, Calif) and referred to the studies of Andrews, 23 Germane et al, 24 and Park and Yang 25 for inclinations and angulations. We did not add a curve of Spee or a curve of Wilson (Fig 2, A).…”

Section: Methodsmentioning

confidence: 99%

Factors controlling anterior torque during C-implant-dependent en-masse retraction without posterior appliances

Kim

Sung

et al. 2011

American Journal of Orthodontics and Dentofacial Orthopedics

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“…Vertical positioning errors may be caused by limitations during bonding, as improper visualization of the teeth's long axis due to malocclusion of the patient [5,16], optical distortion of the actual proximal dimensions of teeth, diminute brackets size and morphological teeth variability in different individuals [17][18][19]. These errors may cause several consequences such as tooth intrusion/ extrusion, uneven marginal ridges, changes in torque [17] and in the buccolingual position of the tooth [20], inadequate intercuspation and inability to attain mutually protected guidances [5], thereby increasing the risk of relapse [17].…”

Section: Discussionmentioning

confidence: 99%

Are the posterior bracket placement patterns reliable?

Mattielo¹,

Arruda²,

Xavier³

et al. 2016

Rev. Odonto Ciênc. (Online)

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Objective: Investigate the marginal ridges leveling accuracy of Alexander and Viazis bracket placement methods. Methods: Eighty pairs of dental casts were selected, with complete permanent dentition, without occlusal wear or restorations. A linking line between mesial and distal ridges of posterior teeth was done to measure the occlusal thirds with digital caliper. The means, obtained from 3 different examiners, were compared with the values of Alexander and Viazis' equations through One-way ANOVA with α=0.05. Results: The second premolar placement value (x) suggested by the authors showed no difference in comparison to the occlusal third size of the sample teeth (p>0.05), however for the first premolars, a significant difference was found (p<0.001). The value adopted for positioning on the first permanent molars (x-0.5mm) is consistent with the size of the occlusal third of these teeth (p=0.0531). A significant difference was also found for the second permanent molars bracket positioning between the predefined value (x-1mm) and the sample (p<0.001). Conclusions: The vertical positioning values proposed by Alexander and Viazis for placement of second premolars and first permanent molars do contribute to the leveling of marginal ridges, which cannot be applied for the values recommended for the first premolars and second permanent molars.Key words: Dental bonding; Orthodontic appliances; Orthodontic brackets Os padrões de posicionamento posterior de bráquetes são confiáveis?ResuMO Objetivo: Verificar a precisão no nivelamento de cristas marginais dos padrões de posicionamento de bráquetes de Alexander e Viazis em dentes posteriores. Métodos: Foram selecionados 80 pares de modelos de gesso com dentição permanente completa e sem desgastes ou restaurações oclusais. Uma linha ligando as cristas marginais mesial e distal dos dentes foi demarcada, visando a medição do terço oclusal com um paquímetro digital milimetrado. As médias obtidas de 3 examinadores foram comparadas com os valores propostos por Alexander e Viazis através do teste de One-Way ANOVA com α=0,05. Resultados: O valor (x) proposto para o posicionamento nos segundos pré-molares não apresentou diferença com a dimensão do terço oclusal da amostra (p>0,05); entretanto para os primeiros pré-molares houve diferença significativa (p<0,001). O valor de posicionamento adotado para os primeiros molares permanentes (x-0,5mm) foi condizente com a dimensão do terço oclusal destes dentes (p=0,0531). Houve diferença significativa entre o valor (x-1mm) predifinido para os segundos molares permanentes e a amostra (p<0,001). Conclusões: Os valores de posicionamento de acessórios propostos por Alexander e Viazis para os segundos pré-molares e para os primeiros molares permanentes promovem o nivelamento das cristas marginais, entretanto o mesmo não ocorre para os primeiros pré-molares e segundos molares permanentes.

show abstract

Three biologic variables modifying faciolingual tooth angulation by straight-wire appliances

Cited by 127 publications

References 10 publications

Comparison of Torquing Ability of 0.019” × 0.025” Nickel Titanium and Fiber Composite Archwires -A Cone Beam Computed Tomography Study

Comparison of Torquing Ability of 0.019” × 0.025” Nickel Titanium and Fiber Composite Archwires -A Cone Beam Computed Tomography Study

Factors controlling anterior torque during C-implant-dependent en-masse retraction without posterior appliances

Are the posterior bracket placement patterns reliable?

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