The Assessment of Crowding without the Need to Record Arch Perimeter. Part II: Crowded and Irregular Arches

1996 ◽  
Vol 23 (3) ◽  
pp. 229-236
Author(s):  
Joanna M. Battagel ◽  
A. S. Johal ◽  
V. P. Crow
Keyword(s):  
Computer Program ◽  
Clinical Assessment ◽  
Orthodontic Treatment ◽  
Correlation Coefficients ◽  
Observer Agreement ◽  
Reflex Microscope ◽  
Fixed Appliances

A mathematically determined technique which seemed to be valid for the calculation of crowding and spacing in arches with acceptable alignment, was tested on a series of arches with varying degrees of crowding and irregularity. Upper and lower study casts of 30 individuals with sufficient malalignment and crowding to warrant orthodontic treatment with fixed appliances were examined. Models were measured by three operators, using a reflex microscope interfaced to an IBM compatible PC and a customized calculation program. The degree ofcrowdmg was compared with a ‘clinical’ assessment of each arch, in which the irregularity was measured directly using a steel ruler. Both the computer calculated and clinical values varied between observers, but the agreement between observers was better using the reflex microscope. Correlation coefficients ranged from 0·92 to 0·96 for the reflex microscope, and between 0·86 and 0·91 for the clinical assessment. Inter-observer agreement for the three operators was high: 0·93 for the reflex microscope and 0·87 where a ruler was used. This suggests that the computer program used to calculate the crowding was valid for the crowded arches under consideration.

scholarly journals A computerized diet questionnaire for use in diet health education

1991 ◽  
Vol 66 (1) ◽  
pp. 3-15 ◽  
Author(s):  
M. G. O'Donnell ◽  
M. Nelson ◽  
P. H. Wise ◽  
D. M. Walker
Keyword(s):  
Sex Differences ◽  
Health Education ◽  
Computer Program ◽  
General Public ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Biochemical Variables ◽  
Diet Records ◽  
Alcohol Fibre ◽  
Weighed Record

A diet questionnaire was developed in association with a computer program to provide rapid nutritional feedback to the general public. The questionnaire was validated against 16 d of weighed diet records and biochemical variables in blood and urine. The highest Pearson correlation coefficients obtained between the questionnaire and the weighed records were for alcohol, fibre, iron, riboflavin (r 0.74, 0.67, 0.66, 0.66 respectively). Striking sex differences were shown in the results; the trend for higher correlations persisted in females. At least 65% of subjects were classified by questionnaire to within one quintile of the classification by weighed record for the majority of nutrients.

Changes in the Complexity of Orthodontic Treatment for Patients Referred to a Teaching Hospital

1988 ◽  
Vol 15 (1) ◽  
pp. 27-32 ◽  
Author(s):  
C. D. Stephens ◽  
N. W. Harradine
Keyword(s):  
General Practitioner ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Further Training ◽  
Fixed Appliance ◽  
Dental Hospital ◽  
Orthodontic Patients ◽  
Specialist Treatment ◽  
Fixed Appliances ◽  
Removable Appliance

The records of 200 orthodontic patients accepted for treatment by the Orthodontic Department of the Bristol Dental Hospital in 1977 were compared with 200 taken on in 1985 in order to determine whether there had been any change in the proportion of referred cases requiring more complex procedures. Within each sample, cases were categorized as follows: (a) suitable for removable appliance treatment by an undergraduate or general practitioner; (b) requiring simple one arch fixed appliance treatment such as might he attempted by a general practitioner after a period of further training; (c) needing specialist treatment such as full multibracketed fixed appliances or orthognathic surgery. It was found that there had been no change in the proportions of simple and complex cases referred during the 8-year period although the proportion of patients now receiving complex treatment had increased greatly. Possible explanations and implications are discussed.

Prioritized Commitment-Based Clinical Assessment: A New Method for Assessment of Orthodontic Treatment Outcomes

2021 ◽  
Vol 34 (3) ◽  
pp. 182-188
Author(s):  
Seyed Mohammadreza Safavi ◽  
◽  
Arash Farzan ◽  
Farnaz Younessian ◽  
Alireza Akbarzadeh Baghban ◽  
...  
Keyword(s):  
Treatment Outcomes ◽  
Clinical Assessment ◽  
Orthodontic Treatment ◽  
New Method

scholarly journals Long-term stability of maxillary anterior alignment in non-extraction cases

2013 ◽  
Vol 18 (3) ◽  
pp. 46-53 ◽  
Author(s):  
Luiz Filiphe Gonçalves Canuto ◽  
Marcos Roberto de Freitas ◽  
Karina Maria Salvatore de Freitas ◽  
Rodrigo Hermont Cançado ◽  
Leniana Santos Neves
Keyword(s):  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Term Stability ◽  
Long Term Stability ◽  
Irregularity Index ◽  
Posttreatment Period ◽  
Fixed Appliances ◽  
Maxillary Incisors ◽  
Dental Cast

OBJECTIVE: The purpose of this retrospective study was to evaluate long-term stability of maxillary incisors alignment in cases submitted to non-extraction orthodontic treatment. METHODS: The sample comprised 23 patients (13 female; 10 male) at a mean initial age of 13.36 years (SD = 1.81 years), treated with fixed appliances. Dental cast measurements were obtained at three different time points (T1 - pretreatment, T2 - posttreatment and T3 - long-term posttreatment). Variables assessed in maxillary arch were Little Irregularity Index, intercanine, interpremolar and intermolar widths, arch length and perimeter. The statistical analysis was performed by one-way ANOVA and Tukey tests when necessary. Pearson' correlation coefficients were used to investigate possible associations between the evaluated variables. RESULTS: There was no significant change in most arch dimension measurements during and after treatment, however, during the long-term posttreatment period, it was observed a significant maxillary incisors crowding relapse. CONCLUSION: The maxillary incisors irregularity increased significantly (1.52 mm) during long-term posttreatment. None of the studied clinical factors demonstrated to be predictive of the maxillary crowding relapse.

Reliability of the Multi-Dimensional Voice Program for the Analysis of Voice Samples of Subjects With Dysarthria

1999 ◽  
Vol 8 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Ray D. Kent ◽  
Houri K. Vorperian ◽  
Joseph R. Duffy
Keyword(s):  
Computer Program ◽  
Clinical Assessment ◽  
Quantitative Information ◽  
Speech Disorders ◽  
Clinical Applications ◽  
Automatic Analysis ◽  
Acoustic Parameters ◽  
Assessment And Treatment ◽  
Computer Based ◽  
Quantitative Assessments

Computer-based analysis systems are increasingly available for the clinical assessment of speech and voice functions. These systems have the potential to provide immediate quantitative information to assist clinical assessment and treatment. The Multi-Dimensional Voice Program (MDVP) is a computer program that can calculate as many as 33 acoustic parameters from a voice sample. The MDVP appears to have potential for rapid quantitative assessments of voice in both research and clinical applications. This report evaluates the robustness and reliability of MDVP for vocal analyses of 32 individuals with dysarthria of various etiologies. It is concluded that the reliability is generally very good and that MDVP has potential as a tool for the semi-automatic analysis of voice samples in dysarthria. Some parameters appear to hold particular value in the description of voice qualities in these speech disorders.

An Investigation to Estimate the Flouride Uptake Adjacent to a Fluoride-releasing Bonging Agent

1995 ◽  
Vol 22 (2) ◽  
pp. 113-122 ◽  
Author(s):  
S. M. Chadwick ◽  
P. H. Gordon
Keyword(s):  
At Risk ◽  
Clinical Significance ◽  
Orthodontic Treatment ◽  
Bonding Agent ◽  
Bonding Agents ◽  
Acid Etch ◽  
Fixed Appliances

Decalcification of the teeth remains a problem during orthodontic treatment with fixed appliances. It has been suggested that bonding agents which release fluoride could supply it to the area of the tooth most at risk from decalcification. The aim of this study was to estimate uptake by enamel adjacent to a fluoride releasing bonding agent. Acid etch biopsies were used to estimate the concentration of fluoride in enamel adjacent to brackets bonded with Vitrabond® and Geristore®. Results indicate that there was a significant increase in the concentration of fluoride in enamel adjacent to Vitrabond®. The clinical significance of the increase in the concentration of fluoride adjacent to Vitrabond® and the mechanism by which fluoride moves from the material into the enamel remain unclear.

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