scholarly journals Heritability of Thirty Cephalometric Parameters on Monozygotic and Dizygotic Twins: Twin Study Method

2013 ◽  
Vol 14 (2) ◽  
pp. 304-311 ◽  
Author(s):  
T Praveen Kumar Reddy ◽  
B Sunil Kumar ◽  
Gojja Sreedevi ◽  
Baratam Srinivas ◽  
CMS Krishna Prasad ◽  
...  
Keyword(s):  
Genetic Control ◽  
Treatment Planning ◽  
Growth Pattern ◽  
Twin Study ◽  
Orthodontic Treatment ◽  
Environmental Influence ◽  
Facial Growth ◽  
Dizygotic Twins ◽  
Genes And Environment ◽  
Genetic Mechanisms

ABSTRACT Genetic mechanisms are already predominant during embryonic craniofacial morphogenesis, but environment is also thought to influence dentofacial morphology postnatally, particularly during facial growth. A better understanding of the relative effects of genes and environment on dentofacial and occlusal parameters should improve our knowledge on the etiology of orthodontic disorders and therefore also on the possibilities and limitations of the orthodontic treatment and treatment planning. The aim of the present study is to explore the genetic and environmental influence on craniofacial dimensions in a group of 19 pairs of twins using the twin study method. The twin study carried out here clearly indicates that craniofacial matrix is under substantial genetic control and the redirection of a basic growth pattern may be modified only within biological limits which are harmonious for the patient. How to cite this article Sreedevi G, Srinivas B, Reddy TPK, Prasad CMSK, Kumar BS, Satish R. Heritability of Thirty Cephalometric Parameters on Monozygotic and Dizygotic Twins: Twin Study Method. J Contemp Dent Pract 2013; 14(2):304-311.

The Current Status of Facial Growth Prediction: A Review

1979 ◽  
Vol 6 (1) ◽  
pp. 11-17 ◽  
Author(s):  
W. J. B. Houston
Keyword(s):  
Treatment Planning ◽  
Orthodontic Treatment ◽  
Current Status ◽  
Facial Growth ◽  
Average Growth ◽  
Growth Prediction ◽  
Facial Pattern ◽  
Age And Sex

Facial growth has an important bearing on orthodontic treatment and on its stability. However, despite much research in this field, the prediction of facial growth is subject to considerable inaccuracies. The best that can be done is to base treatment on the existing facial pattern with an allowance for average growth according to age and sex. In view of the uncertainty of prediction, treatment planning should be based on facial and dental relationships that change least with growth.

The Dentoalveolar Compensatory Mechanism: Background and Clinical Implications

1980 ◽  
Vol 7 (3) ◽  
pp. 145-161 ◽  
Author(s):  
Beni Solow
Keyword(s):  
Treatment Planning ◽  
Growth Pattern ◽  
Orthodontic Treatment ◽  
Individual Variability ◽  
Large Individual ◽  
Clinical Implications ◽  
Cephalometric Analysis ◽  
Compensatory Mechanism

The present paper aims to survey the background and clinical implications of the dento-alveolar compensatory mechanism by which the teeth and alveolar arches are adapted to the varying jaw relationships. The background, a large individual variability in the growth pattern of the jaws, is presented in some detail. The operation of the system is described, and possible underlying factors outlined. The relation to the development of malocclusion is analysed, and some consequences for the interpretation of cephalometric analysis systems and for orthodontic treatment planning are discussed.

scholarly journals Orthodontic approach to treat complex hypodontia using miniscrews in a growing patient

2015 ◽  
Vol 20 (4) ◽  
pp. 82-90 ◽  
Author(s):  
Renato Barcellos Rédua ◽  
Paulo Cesar Barbosa Rédua ◽  
Carlos Eduardo de Almeida Ferreira ◽  
Adriana de Oliveira Lira Ortega
Keyword(s):  
Female Patient ◽  
Growth Pattern ◽  
Orthodontic Treatment ◽  
Dental Arch ◽  
Tooth Size ◽  
Facial Growth ◽  
Primary Molar ◽  
Length Discrepancy ◽  
Permanent Molars

This article reports orthodontic treatment of a case of hypodontia of five premolars in an 11-year-old female patient with a positive tooth size-arch length discrepancy in both dental arches. The patient had a straight profile with balanced facial growth. Setup manufacture revealed the possibility of achieving ideal occlusion by mesializing permanent molars up to 15 mm, in addition to keeping a primary molar in the dental arch. With the aid of absolute anchorage, the proposed mechanics was performed and the occlusion predicted in the setup was achieved, while profile and facial growth pattern were maintained. The use of miniscrews for extensive orthodontic movements was successful. Furthermore, one primary molar was extensively mesialized. The indication of gingivoplasty to correct gingival smile proved effective. This is considered a useful technique for orthodontists.

scholarly journals Treatment of a Patient with Multiple Impacted Teeth

2007 ◽  
Vol 77 (4) ◽  
pp. 735-741 ◽  
Author(s):  
Richard Scott Conley ◽  
Scott B. Boyd ◽  
Harry L. Legan ◽  
Christopher C. Jernigan ◽  
Craig Starling ◽  
...  
Keyword(s):  
Case Report ◽  
Treatment Planning ◽  
Orthodontic Treatment ◽  
Primary Teeth ◽  
Permanent Tooth ◽  
Permanent Teeth ◽  
Treatment Sequence ◽  
Impacted Teeth ◽  
Case Complexity ◽  
Multiple Primary

Abstract An impacted or missing permanent tooth can add significant complications to an otherwise straightforward case. When multiple impacted teeth are present, the case complexity increases further. Developing a treatment sequence, determining appropriate anchorage, and planning and executing sound biomechanics can be a challenge. The following case report illustrates a patient reportedly diagnosed with mild scleroderma as an adolescent. He presented for orthodontic treatment as an adult with multiple retained primary teeth and multiple impacted teeth. Diagnosis, treatment planning, and various methods of managing guided eruption of impacted teeth will be discussed. Following orthodontic treatment that required extraction of multiple primary and permanent teeth as well as exposure and ligation of multiple permanent teeth by an oral surgeon, the patient finished with a significantly improved functional and esthetic result.

Genetic control of sebum excretion and acne—a twin study

1988 ◽  
Vol 118 (3) ◽  
pp. 393-396 ◽  
Author(s):  
SHERNAZ WALTON ◽  
E.H. WYATT ◽  
W.J. CUNLIFFE
Keyword(s):  
Genetic Control ◽  
Twin Study ◽  
Sebum Excretion

Growth Pattern in Skeletal Class I Malocclusion: A Cephalometric Study

2021 ◽  
Vol 11 (1) ◽  
pp. 49-54
Author(s):  
Sujal Amatya ◽  
Rabindra Man Shrestha ◽  
Shristi Napit
Keyword(s):  
Growth Pattern ◽  
Strong Correlation ◽  
Class I ◽  
Facial Growth ◽  
Skeletal Class ◽  
Facial Height ◽  
Lateral Cephalograms ◽  
Growth Modification ◽  
Cephalometric Study

Introduction: Great emphasis has been given to the evaluation of sagittal apical base relationship in orthodontic diagnosis and treatment planning. The prediction of magnitude and direction of facial growth based on sagittal relationship will help in orthodontic treatment with growth modification. The objective of the study is to assess the growth pattern in skeletal Class I malocclusion. Materials and Method: 104 subjects (52 male and 52 female) with the age between 18-30 years with Class I skeletal relation was selected from lateral cephalograms of patients visiting the Department of Orthodontics, Kantipur Dental College. The ANB angle was measured to assess the sagittal jaw relationship and the Jarabak’s ratio to access the growth pattern. Descriptive statistics were calculated for each parameter. Pearson’s test was done to evaluate the correlation between the parameters. Independent t-test was done to compare Anterior Facial height (AFH), Posterior Facial Height (PFH) and Jarabak’s ratio between male and female subjects. Result: Among the total subjects with skeletal Class I malocclusion; hyperdivergent growth pattern was least (10.57%), followed by normodivergent (18.26%) and hypodivergent growth pattern (71.15%). Mean Jarabak’s ratio for hyperdivergent, normodivergent and hypodivergent growth pattern were 58.65±1.94, 63.98±0.85 and 69.98±4.13 respectively. Very strong correlation was found between AFH and PFH in hyperdivergent (r = 0.821) and normodivergent group (r =0.978). Strong correlation was found in hypodivergent group between AFH and PFH (r =0.743). Also, strong correlation was found in hypodivergent group between PFH and Jarabak’s ratio (r =0.643). Conclusion: Hypodivergent growth pattern was the dominant growth pattern in skeletal Class I malocclusion. PFH influenced the determination of Jarabak’s ratio more than the AFH in hypodivergent growth pattern. Hypodivergent growth pattern is correlated with large SNB angle.

scholarly journals Associated dental anomalies: case report

2005 ◽  
Vol 13 (4) ◽  
pp. 431-436 ◽  
Author(s):  
Daniela Gamba Garib ◽  
Nildiceli Leite Melo Zanella ◽  
Sheldon Peck
Keyword(s):  
Case Report ◽  
Early Diagnosis ◽  
Genetic Control ◽  
Treatment Planning ◽  
Interesting Case ◽  
Clinical Implications ◽  
Dental Anomalies ◽  
Dental Abnormalities ◽  
Developmental Disturbances ◽  
Shared Genetic

Certain human dental anomalies frequently occur together, supporting the accumulated evidence of the shared genetic control of dental developmental disturbances. The present study reports a rare and interesting case of a 12-year-old girl with an association of multiple dental abnormalities, including agenesis, tooth malposition and delayed development. The etiology and treatment planning are discussed with reference to the literature. The clinical implications of genetically controlled patterns of dental anomalies are important in the establishment of early diagnosis and appropriate orthodontic intervention.

Cone-beam computed tomography for routine orthodontic treatment planning: A radiation dose evaluation

2008 ◽  
Vol 133 (5) ◽  
pp. 640.e1-640.e5 ◽  
Author(s):  
Maria Alves Garcia Silva ◽  
Ulrich Wolf ◽  
Frank Heinicke ◽  
Axel Bumann ◽  
Heiko Visser ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Dose ◽  
Treatment Planning ◽  
Cone Beam Computed Tomography ◽  
Orthodontic Treatment ◽  
Cone Beam ◽  
Dose Evaluation

scholarly journals Influence of Vertical Facial Growth Pattern on Herbst Appliance Effects in Prepubertal Patients: A Retrospective Controlled Study

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Maria Rita Giuca ◽  
Marco Pasini ◽  
Sara Drago ◽  
Leonardo Del Corso ◽  
Arianna Vanni ◽  
...  
Keyword(s):  
Growth Pattern ◽  
Class Ii ◽  
Growth Patterns ◽  
Response To Treatment ◽  
Controlled Study ◽  
Class Ii Malocclusion ◽  
Facial Growth ◽  
Herbst Appliance ◽  
Lateral Cephalograms ◽  
Vertical Growth Pattern

Introduction. The Herbst device is widely used for correction of class II malocclusions; however, most of the researches carried out on the Herbst appliance in literature do not take into account patients with a different mandibular divergence. The aim of this study was to investigate the effects of Herbst on dental and skeletal structures and to evaluate possible influence of vertical facial growth patterns. Methods. A retrospective study was conducted on lateral cephalograms of 75 growing patients (mean age: 9.9 ± 1.9 years) with class II malocclusion treated with Herbst. Subjects were divided into 3 groups using the mandibular divergence index (SN and GoMe angle). Cephalometric parameters were evaluated using the modified SO (sagittal occlusion) Pancherz’s analysis. A statistical analysis was conducted to evaluate differences among groups using ANOVA. Results. Our study showed differences in response to treatment depending on patient’s facial vertical growth pattern. Cranial base angle and mandibular rotation were significantly different (p<0.05) between hypodivergent patients and normodivergent patients and between hypodivergent and hyperdivergent subjects. Conclusion. Hypodivergent patients increased their mandibular divergence during treatment to a greater extent than normodivergents; moreover, hyperdivergent patients exhibited a decreased mandibular divergence at the end of the treatment.

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