Critical assessment of a device to measure incisor crown inclination

Ghahferokhi, Asaad Emami; Elias, Lama; Jonsson, Styrbjorn; Rolfe, Ben; Richmond, Stephen

doi:10.1067/mod.2002.118929

Cited by 19 publications

(15 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, these methods typically involve devices not available in the market and require customized fabrication 6,11,13 or high cost technologies. 5 In this study, the angulation of canines was examined in casts, using a method described in a previous study, which offered excellent replicability and a random error of about 2º.…”

Section: Discussionmentioning

confidence: 99%

Análise da correlação entre a angulação (mesiodistal) dos caninos e a inclinação (vestibulolingual) dos incisivos

Sayuri

Ohashi

Costa

et al. 2011

Dental Press J. Orthod.

View full text Add to dashboard Cite

Objective: To assess the degree of correlation between canine angulation and incisor inclination. Methods: Mesiodistal angulation of canines and labiolingual inclination of incisors were obtained by means of digital graphics software (ImageTool ® ) from standardized photographs of the casts of 60 patients. Incisor inclination was also assessed by lateral cephalometric radiographs. Results: Random error showed a variation of around 2° in measurements made on the casts (1.8-2.5), while systematic error, measured by the intraclass correlation test, displayed excellent reproducibility for both methods used in this study (p<0.001, r=0.84-0.96). Linear correlation tests revealed a significant positive correlation between canine angulation and incisor inclination in the maxillary arch (r=0.3, p<0.05) and even more significantly in the mandibular arch (r=0.46 to 0.51, p<0.001), when both were measured on the casts. When incisor inclination was examined by cephalometrics, correlation level was statistically insignificant for maxillary incisors (r=0.06 to 0.21, p>0.05) and varied widely in the mandibular arch (r=0.14 to 0.50). Conclusions: The introduction of changes in the angulation of canines with the aim of monitoring compensations observed in incisor inclination is warranted, especially in the lower arch. Abstract

show abstract

Section: Discussionmentioning

confidence: 99%

Análise da correlação entre a angulação (mesiodistal) dos caninos e a inclinação (vestibulolingual) dos incisivos

Sayuri

Ohashi

Costa

et al. 2011

Dental Press J. Orthod.

View full text Add to dashboard Cite

show abstract

“…Some instruments had been used previously by different authors including Andrews for the measurements and were mentioned in the literature. [151617] The instrument used in the present study was developed on the same principles in the Unit of Orthodontics, Oral Health Sciences Centre, PGIMER, Chandigarh.…”

Section: Discussionmentioning

confidence: 99%

A normative study to evaluate inclination and angulation of teeth in North Indian population and comparision of expression of torque in preadjusted appliances

Verma

Utreja

2014

J Orthodont Sci

View full text Add to dashboard Cite

Aim:The aim of this study was to evaluate angulation and inclination of teeth from the study models of individuals with normal occlusion and evaluation of actual expression of torque expressed by three different bracket systems.Materials and Methods:In this study, the inclination and angulation were measured on 30 study models of North Indian individuals. A self-developed instrument (torque angle gauge) was used for the measurement. Fifteen study models were duplicated for the evaluation of torque expression in the bracket of three different manufacturers with different shape and size of bases.Results:The results give the mean, minimum and maximum, standard deviation of the normative data individually for each tooth. A significant correlation was noted in the angulation of maxillary canine and first premolar, and between premolars; and between mandibular central incisor with lateral incisor and canine, and between premolars.Conclusions:There was a highly significant correlation of teeth angulation and inclination in the maxillary and mandibular arch. Though the error in expression of torque was not significant, but it showed a large range, indicating the need to vary the position of brackets in different bracket systems for achieving optimum torque.

show abstract

“…The TIP tended to record the upper incisor's axial inclination as 10.46Њ smaller than did the lateral radiograph. Similarly, Ghahferokhi et al 8 found a discrepancy of 14Њ using a similar, intraoral method.…”

Section: Discussionmentioning

confidence: 99%

The Third-Order Angle and the Maxillary Incisor's Inclination to the NA Line

Knösel

Kubein-Meesenburg

Sadat-Khonsari

2007

The Angle Orthodontist

View full text Add to dashboard Cite

Objective: To evaluate the relationship between the angular measurement data (incisor's long axis to NA line) and the third-order angle (TA) according to Andrews' description. Materials and Methods: The materials in the study included the lateral radiographs and corresponding dental casts of 32 males and 35 females between 10 and 25 years of age, regardless of their skeletal and dental relationships. All subjects were white and none had undergone orthodontic therapy. Using lateral radiographs, upper and lower incisor angulations were assessed in reference to the NA line. These data were compared with third-order angles derived from direct dental cast measurements, which were performed using an incisor inclination recording appliance. Results: The third-order angle measurements recorded from the dental casts were a mean of 16.2Њ (SD ϭ 5.3Њ) smaller than the axial inclination according to the NA line. In this sample, there was a range of 42.7Њ for the TA variable (mean ϭ 5.6Њ, SD ϭ 9.73Њ) and 47Њ for the 1NA/deg variable (mean ϭ 21.7Њ, SD ϭ 8.67Њ). A highly significant correlation existed (r ϭ 0.84) between Andrews' angle and the inclination estimated in reference to the NA line. Conclusion: Incisor inclination can be better estimated by recognizing the relationship between the torque angle and the axial inclination referred to the NA line. Third-order measurements using dental casts can offer a simple way to get an objective and rapid vision of the incisor's inclination.

show abstract

Critical assessment of a device to measure incisor crown inclination

Cited by 19 publications

References 9 publications

Análise da correlação entre a angulação (mesiodistal) dos caninos e a inclinação (vestibulolingual) dos incisivos

Análise da correlação entre a angulação (mesiodistal) dos caninos e a inclinação (vestibulolingual) dos incisivos

A normative study to evaluate inclination and angulation of teeth in North Indian population and comparision of expression of torque in preadjusted appliances

The Third-Order Angle and the Maxillary Incisor's Inclination to the NA Line

Contact Info

Product

Resources

About