Occlusal traits and longitudinal dental changes in children and adolescents with congenital or childhood onset myotonic dystrophy

2020 ◽  
Author(s):  
Clara Fontinha ◽  
Monica Engvall ◽  
Lotta Sjögreen ◽  
Åsa Mårtensson ◽  
Anne-Berit Ekström ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Myotonic Dystrophy ◽  
Open Bite ◽  
Control Group ◽  
Class Iii ◽  
Healthy Individuals ◽  
Anterior Open Bite ◽  
Posterior Crossbite ◽  
Changes Over Time ◽  
Over Time

Summary Background/objectives This research aimed to study the malocclusions of children and adolescents with myotonic dystrophy type 1 (DM1), in respect to healthy individuals, and trace the occlusal changes that occurred in these individuals during growth. Materials/methods Thirty-six dental casts, from children and adolescents with DM1 living in western and southern Sweden, were compared with a control group of 50 healthy individuals. To identify potential changes in occlusal traits, 26 casts were assessed and followed-up over a median time of 9 years. Independent samples t-tests were used to compare the two groups and their changes over time. Paired samples t-tests tested changes over time within each group (P < 0.05). Results DM1 patients had a higher prevalence of anterior open bite, posterior crossbite, and Class III malocclusions. When compared to controls, patients presented smaller upper and lower intermolar as well as intercanine widths. In both groups, the individuals revealed longitudinal changes with a decrease in both upper and lower arch lengths and an increase on the palatal vault height. During the follow-up period, the prevalence of malocclusions remained almost the same, only significantly differing regarding the changes that occurred between groups referred to the upper intermolar width, which decreased among DM1 patients. Conclusions/implications In comparison to healthy controls, children and adolescents with DM1 have shown already at an early age a higher prevalence of both anterior open bite and posterior crossbite. These occlusal traits did not change with time apart from the upper narrow intermolar width, which further decreased with time.

scholarly journals LIMITED ORTHODONTIC TREATMENT IN MYOTONIC DYSTROPHY II

2017 ◽  
Vol 16 (4) ◽  
pp. 158-165
Author(s):  
Aurelia Magdalena Enache ◽  
◽  
Alexandru Marghescu ◽  
Roxana Antoanela Baluta ◽  
Maria Otilia Blajin ◽  
...  
Keyword(s):  
Myotonic Dystrophy ◽  
Open Bite ◽  
Type Ii ◽  
Myotonic Dystrophy Type ◽  
Class Iii ◽  
Anterior Open Bite ◽  
Posterior Crossbite ◽  
Diagnostic Signs ◽  
Dominant Disease ◽  
Craniofacial Features

Rationale. Myotonic dystrophy (MD) is a multisystemic autosomal dominant disease characterized by myotonia and progressive muscular weakness and atrophy. Objective. The purpose of this study was to describe the dental, skeletal and muscular features in a family with myotonic dystrophy type II and to discuss possible therapeutic strategies. Methods and results. This study presents the case of a family (a mother and two daughthers) diagnosed with myotonic dystrophy type II. Beside the medical history and genetic tests, each subject underwent a clinical examination including impression taking, intra- and extraoral photographs and cephalometric analysis. Our investigations revealed alterations in the transversal and vertical planes. Conclusions. Our findings were consistent with previously reported craniofacial features of patients affected by myotonic disorders, and they may be important diagnostic signs of a congenital muscular disease. We found that the most predominant malocclusions were the anterior open bite and posterior crossbite, but the tendency to class III malocclusion is in contradiction with their findings.

scholarly journals Nonsurgical treatment of a hyperdivergent skeletal Class III patient with mini-screw–assisted mandibular dentition distalization and flattening of the occlusal plane

2021 ◽  
Author(s):  
Yiruo He ◽  
Yangyang Wang ◽  
Xinghai Wang ◽  
Jiangyue Wang ◽  
Ding Bai ◽  
...  
Keyword(s):  
Treatment Plan ◽  
Open Bite ◽  
Nonsurgical Treatment ◽  
Occlusal Plane ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Anterior Open Bite ◽  
Skeletal Class ◽  
Posterior Crossbite ◽  
Mandibular Plane

ABSTRACT Treatment of hyperdivergent skeletal Class III malocclusion is challenging for orthodontists, and orthognathic-orthodontic treatment is usually required. This report presents the successful nonsurgical treatment of a 20-year-old man who had a skeletal Class III malocclusion with anterior open bite, anterior and posterior crossbite, hyperdivergent growth pattern, steep occlusal plane, early loss of three first molars, and an uncommon convex profile with a retruded chin. An orthodontic camouflage treatment plan was chosen based on the etiology and the patient's complaints. Tooth #37 was extracted. Miniscrews were used for uprighting and intruding of the lower molars, distalization of the lower dentition, and flattening of the occlusal plane. After 34 months of active treatment, Class I relationships, proper anterior overjet and overbite, flat occlusal plane, and an esthetic facial profile were achieved. The results demonstrated that the biomechanics involved in the nonsurgical treatment assisted with miniscrews to distalize the mandibular dentition and flatten the occlusal plane while keeping the mandibular plane stable was effective for treating this hyperdivergent skeletal Class III patient with a convex profile and anterior open bite.

Long-term stability of a Class III malocclusion with severe anterior open bite and bilateral posterior crossbite in a hyperdivergent patient

2020 ◽  
Vol 157 (3) ◽  
pp. 408-421
Author(s):  
Oscar Mario Antelo ◽  
Thiago Martins Meira ◽  
Dauro Douglas Oliveira ◽  
Matheus Melo Pithon ◽  
Orlando Motohiro Tanaka
Keyword(s):  
Open Bite ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Anterior Open Bite ◽  
Term Stability ◽  
Long Term Stability ◽  
Posterior Crossbite

scholarly journals Correction of transverse maxillary deficiency and anterior open bite in an adult Class III skeletal patient

2016 ◽  
Vol 6 ◽  
pp. 166-170
Author(s):  
Prerna Hoogan Teja ◽  
Samarjit Singh Teja ◽  
Rabindra S. Nayak ◽  
Abhijit Bagade ◽  
Manu Rashmi Sharma
Keyword(s):  
Transverse Dimension ◽  
Open Bite ◽  
Class Iii ◽  
Maxillary Expansion ◽  
Anterior Open Bite ◽  
Palatal Expansion ◽  
Posterior Crossbite ◽  
Rapid Palatal Expansion ◽  
Dental Crowding ◽  
Maxillary Deficiency

Transverse maxillary deficiency may be associated with sagittal or vertical problems of the maxilla or mandible. It may contribute to unilateral or bilateral posterior crossbite, anterior dental crowding, and unesthetic black buccal corridors on smiling. An adequate transverse dimension is important for stable and proper functional occlusion. Surgically, assisted rapid palatal expansion has been the treatment of choice to resolve posterior crossbite in skeletally mature patients. The following case report presents an adult Class III skeletal patient with an anterior open bite and bilateral posterior crossbite which was treated by surgically assisted rapid maxillary expansion with satisfactory outcomes.

scholarly journals Skeletal morphologic features of Anterior Open Bite Malocclusionamongst black patients visiting the Medunsa oral health centre

2020 ◽  
Vol 75 (8) ◽  
pp. 425-431
Author(s):  
Ntokozo P Sithole ◽  
Mohamed I Khan ◽  
Mosimane PS Sethusa
Keyword(s):  
Black People ◽  
Pearson Correlation ◽  
Health Centre ◽  
Open Bite ◽  
Wilcoxon Test ◽  
Class I ◽  
Control Group ◽  
Class Iii ◽  
Anterior Open Bite ◽  
Anterior Teeth

INTRODUCTION: Anterior open bite (AOB) malocclusion presents as lack of vertical overlap of anterior teeth. It is viewed to be unaesthetic and may affect speech and mastication It develops due to the interaction of hereditary and environmental etiological factors and these usually affect the vertical growth of the face. This study describes the vertical changes of South African black people presenting with AOB. AIMS AND OBJECTIVES: The aim was to determine skeletal morphological features of patients with AOB malocclusion. DESIGN: The design was a retrospective, cross-sectional study. MATERIALS: Archived pre-treatment lateral cephalographs of 181 patients who consulted between 2007 and 2014 were divided into four groups: control group of 62 patients with skeletal Class I pattern without AOB; test groups of patients with AOB (119) divided into 35 Class I, 43 Class II, and 41 Class III malocclusions. Records of each group were divided according to gender. Descriptive statistics, the Pearson correlation coefficient, t-test and. Wilcoxon test were employed to analyze the data, and p values of <0.05 were considered statistically significant. RESULTS AND CONCLUSIONS: Patients with AOB had a larger vertical facial pattern in all classes of malocclusion. Males presented with larger Sn-GoGn angles than females. The PFH/AFH ratio was lower across all classes of malocclusion compared to the control group.

scholarly journals Occlusal Disorders among Patients with Total Clefts of Lip, Alveolar Bone, and Palate

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Anna Paradowska-Stolarz ◽  
Beata Kawala
Keyword(s):  
Birth Defects ◽  
Alveolar Bone ◽  
Open Bite ◽  
Control Group ◽  
Class Iii ◽  
Healthy Individuals ◽  
Dental Anomalies ◽  
Normal Occlusion ◽  
Skeletal Disorders ◽  
Distal Occlusion

Clefts are common birth defects. They are accompanied by various malformations, including disturbances in facial look as well as skeletal disorders that include malocclusions, most frequently crossbites and class III anomalies. The aim of the study was to present the commonest malocclusions in patients with total cleft of the lip, alveolar bone and palate (n=154) and compare the results to the healthy on-cleft patients (n=151). Normal occlusion, characteristic for I angle class, was observed in 50% of the control group and 30% of the examined. In the examined patients with clefts, most frequently crossbite and open bite on the cleft side was observed. In patients with clefts, only 2 out of 154 patients presented isolated dental anomalies. In healthy individuals the commonest occlusal disorder was distal occlusion and dental anomalies. The commonest malocclusions among patients with clefts are crossbites and class III malocclusions.

scholarly journals Prevalence of Malocclusion Among Adolescents In Central Anatolia

2007 ◽  
Vol 01 (03) ◽  
pp. 125-131 ◽  
Author(s):  
İbrahim Erhan Gelgör ◽  
İhya Ali Karaman ◽  
Ertuğrul Ercan
Keyword(s):  
Class Ii ◽  
Open Bite ◽  
Central Anatolia ◽  
Class Iii ◽  
Anterior Open Bite ◽  
Anterior Crowding ◽  
Posterior Crossbite ◽  
Division 1 ◽  
High Prevalence ◽  
Class Ii Division 1

ABSTRACTObjectives: The objective of this study was to describe the prevalence of malocclusion in a population of Central Anatolian adolescents in relation to gender.Methods: The sample comprised 2329 teenagers (1125 boys and 1204 girls), aged between 12 and 17 years (mean age: 14.6 yrs). Occlusal anteroposterior relationships were assessed using the Angle classification. Other variables examined were overjet, overbite, crowding, midline diastema, posterior crossbite, and scissors bite.Results:The results showed that about 10.1% of the subjects had normal occlusions, 34.9% of the subjects had Class I malocclusions, 40.0% had Class II Division 1 malocclusions, 4.7% had Class II Division 2 malocclusions and 10.3% had Class III malocclusions. Over 53.5% had normal overbites, and 18.3%, 14.4%, 5.6%, and 8.2% had increased, reduced, edge-to-edge or anterior open bite values, respectively. Overjet relationship was normal in 58.9%, increased in 25.1%, reversed in 10.4%, and edge-to-edge in 5.6%. A posterior crossbite registered in 9.5% and scissors bite in 0.3%. Anterior crowding was present in 65.2% of the sample and midline diastema in 7.0%. No clear gender differences were noted, except for normal overbite (most frequent in girls, P>.001) and increased overbite (most frequent in boys, P>.05)Conclusions: Class II Division 1 malocclusion is the most prevalent occlusal pattern among the Central Anatolian adolescents and the high values (25.1% and 18.3%) of increased overjet and overbite were a reflection of the high prevalence of Class II malocclusion. (Eur J Dent 2007;1:125-131)

scholarly journals Analysis of Tongue Function from the Orthodontist’s Point of View: Not Only a Matter of Deglutition

2021 ◽  
Vol 11 (6) ◽  
pp. 2520
Author(s):  
Andrea Deregibus ◽  
Simone Parrini ◽  
Maria Chiara Domini ◽  
Jacopo Colombini ◽  
Tommaso Castroflorio
Keyword(s):  
Point Of View ◽  
Control Group ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Hypoplasia ◽  
Skeletal Class ◽  
Posterior Crossbite ◽  
Rest Position ◽  
Functional Aspects ◽  
Angle Class Iii Malocclusion

Many studies report that maxillofacial growth is influenced by genetic and environmental elements and that incorrect breathing, chewing, sucking, and swallowing are promoting factors of malocclusion. This study aims to evaluate the function and the influence of the tongue positions in patients with Angle class III malocclusion, maxillary hypoplasia, and posterior crossbite. One hundred patients, aged between 6 and 12 years old, were enrolled for the study. In the first group, patients with a diagnosis of class III malocclusion, affected by maxillary hypoplasia, skeletal class III, and posterior dental crossbite were recruited. In the control group, not treated patients with no malocclusion, skeletal class I, and without posterior dental crossbite were selected. Regarding atypical deglutition, no statistical differences were reported between the two groups, and 14% of patients reported ankyloglossia. Statistical differences were found in tongue rest position and during the execution of “hold and pull” and “chuck” exercises. Results obtained in this observational study showed that the clinician (orthodontist or general dentist) should analyze the presence/absence of atypical swallowing, the anatomical and functional aspects, and the tongue behavior in the rest position.

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