A computerized system to conduct the Tweed-Merrifield analysis in orthodontics

Barreto, Maximino Brandão; Fonseca, Eduardo Machado; Cunha, Antônio José Lêdo Alves da

doi:10.1590/s1806-83242006000200014

Cited by 4 publications

(7 citation statements)

References 6 publications

(4 reference statements)

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“…Applying desensitizing products on dentin may promote alterations to its structure and influence the adhesion process 59 . In the present study, the desensitizing agent evaluated was Biosilicato® 37 , 41 , 60 , a recently developed bioglass that has shown excellent clinical results in in vitro tests 29 , 53 . Prime & Bond NT (etch-and-prime) and One-up Bond F (self-etching primer) were the adhesive systems of choice.…”

Section: Discussionmentioning

confidence: 99%

Desensitizing bioactive agents improves bond strength of indirect resin-cemented restorations: preliminary results

et al. 2007

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Objective:The aim of this study was to assess the bond strength of indirect composite restorations cemented with a resin-based cement associated with etch-and-rinse and self-etching primer adhesive systems to dentin treated or not with a bioactive material.Materials and Method:Twenty bovine incisor crowns had the buccal enamel removed and the dentin ground flat. The teeth were assigned to 4 groups (n=5): Group I: acid etching + Prime & Bond NT (Dentsply); Group II: application of a bioactive glass (Biosilicato®)+ acid etching + Prime & Bond NT; Group III: One-up Bond F (J Morita); Group IV: Biosilicato® + One-up Bond F. Indirect composite resin (Artglass, Kulzer) cylinders (6x10mm) were fabricated and cemented to the teeth with a dualcure resin-based cement (Enforce, Dentsply). After cementation, the specimens were stored in artificial saliva at 37oC for 30 days and thereafter tested in tensile strength in a universal testing machine (EMIC) with 50 kgf load cell at a crosshead speed of 1 mm/min. Failure modes were assessed under scanning electron microscopy. Data were analyzed statistically by ANOVA and Tukey's test (95% level of confidence).Results:Groups I, II and III had statistically similar results (p>0.05). Group IV had statistically significant higher bond strength means (p<0.05) than the other groups. The analysis of the debonded surfaces showed a predominance of adhesive failure mode for Group III and mixed failure mode for the other groups.Conclusion:The use of desensitizing agent did not affect negatively the bonding of the indirect composite restorations to dentin, independently of the tested adhesive systems.

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Section: Discussionmentioning

confidence: 99%

Desensitizing bioactive agents improves bond strength of indirect resin-cemented restorations: preliminary results

et al. 2007

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“…(2) Precision in orthodontic diagnosis can increase the chance of therapeutic success. (3) Patients records are very important for the consistency of the decisions to be taken in orthodontic treatment. (3) According to Forsyth et.al, (4) orthodontic records based on computerized systems benefit from image storage, data transmission and processing.…”

Section: Introductionmentioning

confidence: 99%

“…(3) Patients records are very important for the consistency of the decisions to be taken in orthodontic treatment. (3) According to Forsyth et.al, (4) orthodontic records based on computerized systems benefit from image storage, data transmission and processing. Computerized systems are widely used, making digital formats usual in obtaining photos, radiographs, cephalometric landmarks, linear and angular measurements and treatment planning to make up patients records.…”

Section: Introductionmentioning

confidence: 99%

“…Computerized systems are widely used, making digital formats usual in obtaining photos, radiographs, cephalometric landmarks, linear and angular measurements and treatment planning to make up patients records. (3) Different orthodontic computerized systems are developed: (prototype) system , created from a printed table of the Cranial Facial Analysis and Total Dentition Space Analysis with Difficulty Index -Tweed-Merrifield Analysisin order to aid orthodontic diagnosis. (3) OSD (orthodontic simulation and diagnosis) system, which provides 3-D measurement of dental casts to the dentists.…”

Section: Introductionmentioning

confidence: 99%

“…(3) Different orthodontic computerized systems are developed: (prototype) system , created from a printed table of the Cranial Facial Analysis and Total Dentition Space Analysis with Difficulty Index -Tweed-Merrifield Analysisin order to aid orthodontic diagnosis. (3) OSD (orthodontic simulation and diagnosis) system, which provides 3-D measurement of dental casts to the dentists. (5) The OPAS System (The Orthodontic Patient Administration System (OPAS©, 'cTc' Software, Manchester, UK)) was developed from a relationship between a hospital orthodontic consultant and a software programmer.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of a Newly Designed Computerized Data Base for Clinical Orthodontic Decision.

Al–Sayagh¹,

Al–Hamdany²

2011

RDENTJ

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Aims: To prepare a newly designed diagnostic digital chart for orthodontic patients, and to help orthodontist making decision in term of diagnosis and treatment planning by using Access program to determine the ideal orthodontic treatment of a patient to provide optimum orthodontic appliances for such treatment. Materials and Methods: A newly designed diagnostic digital chart for orthodontic patients was designed using Access program containing sixteen program forms of examination, diagnosis and treatment plan. In order to evaluate this newly designed digital chart, Multiple Linear Regression Analysis was used. This analysis aims to reveal the importance, strength and direction of factors (26 independent variables= constant variables) and their effects on the 12 dependent variables (random variables) [parameter estimation],all of which representing the information and data taken from fifty randomly selected orthodontic patients' files available in the Department of Orthodontics-College of Dentistry-University of Mosul, who were treated with removable appliances by dental students of fifth class during year 2007-2008. The effects of the independent variables vary in negative or positive way, or even may have zero effect depend on the studied dependent variable. Results :R square measures the proportion of the variability in the dependent variable about the origin explained by regression. The least variability is in y1(right 1 st molar occlusion),where as the highest one in y4(left canine occlusion),{R-Sq for y 1 =0.0%, y2=57.8%, y3= 41.1%, y4=65.6%, y5=32.0%, y6 = 50.9%, y7= 60.5% , y8=62.8%, y9=51.6%, y19=61 .3%, y11=28.2% and y12=51.5%}, each value representing the importance, strength and direction of independent factors and their effects on the dependent factors. Conclusions: New digital orthodontic examination and diagnosis chart was prepared. The creation of a digital chart that combines the use of information technology with a consistent analysis to aid orthodontic diagnosis will be a relevant contribution to the improvement of orthodontic care in POP

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Estudio cefalométrico comparativo entre trazados manuales y digitales con programas informáticos

Castillo¹,

Daniel²

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A computerized system to conduct the Tweed-Merrifield analysis in orthodontics

Cited by 4 publications

References 6 publications

Desensitizing bioactive agents improves bond strength of indirect resin-cemented restorations: preliminary results

Desensitizing bioactive agents improves bond strength of indirect resin-cemented restorations: preliminary results

Evaluation of a Newly Designed Computerized Data Base for Clinical Orthodontic Decision.

Estudio cefalométrico comparativo entre trazados manuales y digitales con programas informáticos

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