scholarly journals Arch Widths after Extraction and Nonextraction Treatment in Class I Patients

2013 ◽  
Vol 14 (2) ◽  
pp. 312-315 ◽  
Author(s):  
Vikranth Shetty ◽  
Sangeeta A Golwalkar
Keyword(s):  
Retrospective Study ◽  
Clinical Significance ◽  
Post Treatment ◽  
Class I ◽  
Posterior Arch ◽  
Arch Width ◽  
End Of Treatment ◽  
Smile Esthetics ◽  
Digital Caliper ◽  
Extraction Treatment

ABSTRACT Aim To compare pretreatment and post-treatment dental arches in relation to intercanine and intermolar width changes in extraction and nonextraction treatment in class I patients. Materials and methods In this retrospective study pretreatment and post-treatment dental casts of 60 patients (30 extractions of first premolars and 30 nonextractions) were selected. Anterior and posterior arch widths in the canine and molar regions from the most labial aspect of buccal surfaces, the canines and the molars were measured with the help of digital caliper on the study models and compared statistically to determine whether the dental arches were narrower after extraction treatment. Results At the start of the treatment there were no statistically significant differences in maxillary and mandibular intercanine widths in both groups. At the end of treatment in both the groups anterior and posterior arch width changes were not significant except for the intercanine dimension which was 0.82 mm larger (p < 0.05) in the extraction group. Conclusion The extraction treatment does not result in narrower dental arches than nonextraction treatment in intercanine and intermolar region. Clinical significance It is documented that the arch widths determine smile esthetics and treatment stability. According to the findings of the present study the arch widths in extraction treatments are not narrower than nonextraction so there will not be any compromising effects on esthetics and treatment stability. How to cite this article Golwalkar SA, Shetty V. Arch Widths after Extraction and Nonextraction Treatment in Class I Patients. J Contemp Dent Pract 2013;14(2):312-315.

Functional Appliances and Arch Width

1992 ◽  
Vol 19 (2) ◽  
pp. 117-125 ◽  
Author(s):  
S. L. Gibbs ◽  
N. P. Hunt
Keyword(s):  
Retrospective Study ◽  
Post Treatment ◽  
Functional Appliance ◽  
Arch Width ◽  
End Of Treatment ◽  
Functional Appliances

A retrospective study was undertaken using treated functional appliance cases. The groups involved 27 Andresen, 19 Bionator, and 23 Fränkel cases. The reflex metrograph was used to measure arch width from study models at the start of treatment, end of treatment including retention, and at least 1 year post-treatment. The effects of each appliance on arch width are compared during and after treatment.

scholarly journals Assessment of arch width changes in Class I and Class II Division 1 patients treated with fixed orthodontics

2021 ◽  
Vol 14 (1) ◽  
pp. 3-7
Author(s):  
Umesh Parajuli ◽  
Manish Bajracharya ◽  
Manju Pandey ◽  
Ima Gurung ◽  
Sapna Laxmi Tuladhar
Keyword(s):  
Study Groups ◽  
Class Ii ◽  
Cross Sectional Study ◽  
T Test ◽  
Post Treatment ◽  
Class I ◽  
Sectional Study ◽  
Cross Sectional ◽  
Arch Width ◽  
Treatment Changes

Background: The orthodontic treatment should aim to maintain the inter-canine and inter-molar width to that of the pre-treatment values. The study was conducted with objective to evaluate arch width changes in Class I and Class II patients treated with fixed orthodontics. Methods: This was a hospital-based cross-sectional study with two study groups. The first group included patients with Class I malocclusion, treated with four first premolar extractions and the second group included patients with Class II Div 1 malocclusion, treated with upper two first premolar extractions. The inter-canine and inter-molar width of the pre and post-treatment study model were measured. To compare the changes observed amongst two groups, independent samples t-test was performed. A paired sample t-test was used to evaluate the treatment changes within each group. Results: There was significant increase in inter-canine width in both maxillary and mandibular arches in both the groups. In Class I extraction group there was significant decrease in the inter-molar width in both maxillary and mandibular arches. The Class II Div1 maxillary extraction group also showed significant increase in inter-canine width in both maxillary and mandibular arches. In the same group there was decrease in post treatment Methods: This was a hospital-based cross-sectional study with two study groups. The first group included patients with Class I malocclusion, treated with four first premolar extractions and the second group included patients with Class II Div 1 malocclusion, treated with upper two first premolar extractions. The inter-canine and inter-molar width of the pre and post-treatment study model were measured. To compare the changes observed amongst two groups, independent samples t-test was performed.  A paired sample t-test was used to evaluate the treatment changes within each group. Results: There was significant increase in inter-canine width in both maxillary and mandibular arches in both the groups. In Class I extraction group there was significant decrease in the inter-molar width in both maxillary and mandibular arches. The Class II Div1 maxillary extraction group also showed significant increase in inter-canine width in both maxillary and mandibular arches. In the same group there was decrease in post-treatment inter-molar width in both arches with significant decrease in the maxillary inter-molar width. Conclusion: There was increase in inter-canine width in both Class I extraction group and Class II Div 1 maxillary extraction group with decrease in inter-molar width in both the groups.  

scholarly journals Maxillary Transverse Deficit: A Retrospective Study of Two Biologically Oriented Devices through a Digital Workflow

2022 ◽  
Vol 9 (1) ◽  
pp. 31
Author(s):  
Graziano Montaruli ◽  
Simona Virgilio ◽  
Michele Laurenziello ◽  
Michele Tepedino ◽  
Domenico Ciavarella
Keyword(s):  
Retrospective Study ◽  
3D Models ◽  
T Test ◽  
P Value ◽  
Posterior Arch ◽  
Maxillary Expansion ◽  
Anterior Arch ◽  
Arch Width ◽  
Limit Value ◽  
Pre Treatment

The aim of this retrospective study was to compare the efficiency of two biologically oriented devices in achieving maxillary expansion: Rapid Palatal Expander (RPE) and Nitanium Palatal Expander-2 (NPE-2). Thirty-six subjects, divided in two equal groups, were included in this study. Maxillary dental arches were scanned using Trios 3 shape®, in order to perform a digital analysis of 3D models. The models were analyzed using Autodesk Fusion 360® and Meshmixer®. All data obtained from analysis of pre-treatment and post-treatment models were processed using Prism® software. The anterior arch width, the posterior arch width, the palate height, and palatal surface were measured to evaluate differences between the devices. A D’Agostino–Pearson normality test was done to check the data. A non-parametric t-test was used to compare the anterior and posterior arch width between the two groups, while a parametric t-test was used to compare the palatal height measurements between the two groups. The p-value was calculated. The limit value fixed was 0.05. Palatal width and surface showed a significant increase in both groups, but no significant changes in palatal height were found. The data processed showed that there were no significant differences between the devices (ΔREP−ΔNPE) in variation of anterior arch width, there were no significant differences in variation of posterior arch width and there were no significant differences in variation of palatal height. The comparison between the two groups showed that both methods were equally effective in correcting transverse defect.

scholarly journals A Cephalometric Evaluation of Pretreatment and Post-treatment Outcome using Tetragon Analysis: A Retrospective Study

2013 ◽  
Vol 14 (2) ◽  
pp. 238-243
Author(s):  
Sunil S Nayak ◽  
C Pushpalatha ◽  
Vinny S Bhasin ◽  
Praveen Tammannavar ◽  
Vinod Viswanathan
Keyword(s):  
Treatment Outcome ◽  
Retrospective Study ◽  
Class Ii ◽  
Post Treatment ◽  
Class I ◽  
Plane Angle ◽  
Class Iii ◽  
Fixed Appliance ◽  
Skeletal Class ◽  
Skeletal Class Ii

ABSTRACT Statement of problem Few cephalometric analyses have been put forward to assess the treatment outcome after orthodontic treatment. However, these analyses are somewhat complicated and time consuming. The Tetragon analysis is introduced with measurement of treatment outcome as one of its objectives. Purpose of study The study was undertaken to evaluate the treatment outcome by checking the skeletal and dental changes using pretreatment and post-treatment radiographs and to evaluate the efficiency of treatment in the Department of Orthodontics, College of Dental Sciences, Davangere, using the Tetragon analysis. Materials and methods Records of 35 finished patients with fixed orthodontic therapy using preadjusted edgewise appliance were selected. The samples were analyzed separately for the skeletal parameters consisting of skeletal class I, II and III using Tetragon analysis. Results The post-treatment reduction of upper incisor palatal plane angle was found to be statistically significant in skeletal class I (p < 0.01) and skeletal class II patients (p < 0.05). The post-treatment increase in interincisal angle was found to be statistically significant in skeletal class I (p < 0.01) class II patients (p < 0.05). Conclusion Fixed appliance therapy reduced the proclination of upper incisors and increased the interincisal angle in skeletal class I and II cases but not in skeletal class III cases. The lower incisal angulation and the maxilla-mandibular plane angle did change significantly and so were the angles of the Trigon. The Tetragon analysis proved easy to measure the treatment outcome. How to cite this article Bhasin VS, Tammannavar P, Pushpalatha C, Nayak SS, Viswanathan V. A Cephalometric Evaluation of Pretreatment and Post-treatment Outcome using Tetragon Analysis: A Retrospective Study. J Contemp Dent Pract 2013;14(2):238-243.

Incidence of Uterine Torsion and Related Factors in Buffaloes of Amul Milk Shed Area

2019 ◽  
Vol 15 (01) ◽  
pp. 17-20
Author(s):  
Chintan S Pateliya1 ◽  
J A Patel ◽  
A J Dhami ◽  
S B Patel ◽  
H L Makwana
Keyword(s):  
Retrospective Study ◽  
Survival Rate ◽  
Caesarean Section ◽  
Post Treatment ◽  
Full Term ◽  
Related Factors ◽  
Factors Influencing ◽  
Uterine Torsion

A study was carried out to find out the retrospective incidence of uterine torsion in buffaloes among obstetrical cases in Amul milk shed area and factors influencing it. Data on 1,13,772 obstetrical cases attended from January 2017 to June 2018 by Amul Veterinarians were collected. Moreover, 50 buffaloes suffering from uterine torsion were taken up during July-December, 2018 to know the side, site, degree of uterine torsion, parity as well as sex and viability of the calf and the dam after detorsion/Caesarean section in the same area. In the retrospective study, a total of 2000 cases of uterine torsion were recorded among total 1,13,772 bovine obstetrical cases, which encompassed 1.76%. Of the 2000 cases, 92.20 (1844) percent torsions were found in buffaloes only. Among 57,111 obstetrical cases attended in buffaloes, the incidence of uterine torsion was 3.23%. Moreover, the region/center-wise incidence of torsion cases varied from 1.30–19.36%. The highest incidence of uterine torsion was found in Anand region (19.36 %) followed by Kathlal (11.23 %) and Mahemdabad (10.14 %) regions, while the lowest incidence was in Virpur (2.06%), Petlad (1.46%) and Piplata (1.30%). It was concluded that buffaloes mostly experience right side (100%), post-cervical (82%) uterine torsion of 270–360° (66%), at full term of gestation (70%)with lower survivability of the calves (30%), however, the survival rate of the dams post-treatment was 90%.

scholarly journals Expectancies as predictors of symptom improvement after antimicrobial therapy for persistent symptoms attributed to Lyme disease

2021 ◽  
Author(s):  
Henriët van Middendorp ◽  
Anneleen Berende ◽  
Fidel J. Vos ◽  
Hadewych H. M. ter Hofstede ◽  
Bart Jan Kullberg ◽  
...  
Keyword(s):  
Lyme Disease ◽  
Treatment Success ◽  
Symptomatic Improvement ◽  
Post Treatment ◽  
Symptom Improvement ◽  
Persistent Symptoms ◽  
Treatment Expectancies ◽  
End Of Treatment ◽  
Pre Treatment

Abstract Introduction/Objective Expectancies about symptom improvement or deterioration are reliable predictors of symptom progression and treatment outcomes (symptom resolution or symptomatic improvement) in many (non-)pharmacological studies and treatments. This study examined predictors of symptom improvement after antimicrobial therapy for persistent symptoms attributed to Lyme disease, hypothesizing particularly pre-treatment expectancies regarding symptom improvement to be predictive. Methods A predictive study was performed on pre-treatment and post-treatment individual characteristics, including expectancies, and physical and mental health–related quality of life (HRQoL) from the PLEASE-trial comparing randomized 12-weeks of doxycycline, clarithromycin-hydroxychloroquine, or placebo following 2 weeks of intravenous ceftriaxone. At end-of-treatment (14 weeks after trial start) and follow-up (52 weeks), complete data of 231 and 170 (of initial 280) patients with persistent symptoms temporally related to a history of erythema migrans or otherwise confirmed symptomatic Lyme disease, or accompanied by B. burgdorferi IgG or IgM antibodies, were examined through hierarchical regression analyses. Results In addition to pre-treatment HRQoL, pre-treatment expectancies regarding symptom improvement were consistently associated with stronger physical and mental HRQoL improvements at both end-of-treatment and follow-up (95% CI range: .09;.54, p < .01 to .27;.92, p < .001). Post-treatment expectancies regarding having received antibiotics vs. placebo was associated with more HRQoL improvement at end-of-treatment, but not at follow-up (95% CI-range 1.00;4.75, p = .003 to −7.34; −2.22, p < .001). Conclusions The present study shows that, next to pre-treatment functioning, patients’ pre-treatment and post-treatment expectancies regarding improvement of persistent symptoms attributed to Lyme disease relate to a more beneficial symptom course. Expectancies of patients may be relevant to explain and potentially improve patient outcomes (e.g., by optimized communication about treatment success). Trial registration ClinicalTrials.gov, NCT01207739 (Registration date: 23–09-2010) Key Points• As there is currently no sufficient symptom resolution or symptomatic improvement for many patients with persistent symptoms attributed to Lyme disease, it is relevant to know which factors determine symptom progression and predict heterogeneity in treatment response.• Next to pre-treatment functioning, expectancies regarding symptom improvement and having received antimicrobial study medication are associated with a more beneficial symptom course after both shorter-term and longer-term antimicrobial treatment.• Expectancies are relevant to consider in treatment studies and may be useful in clinical settings to improve symptom course and treatment outcome (e.g., by optimized communication about treatment success).

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