Cephalometric evaluation of intrusion of maxillary posterior teeth by miniscrews in the treatment of open bite

2021 ◽  
Author(s):  
Leyla Cime Akbaydogan ◽  
Mehmet Akin
Keyword(s):  
Open Bite ◽  
Posterior Teeth

scholarly journals Validating clinical characteristic of primary failure of eruption (PFE) associated with PTH1R variants

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Cristina Grippaudo ◽  
Isabella D’Apolito ◽  
Concetta Cafiero ◽  
Agnese Re ◽  
Pietro Chiurazzi ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
Mutational Analysis ◽  
Clinical Signs ◽  
Open Bite ◽  
Clinical Severity ◽  
Mixed Dentition ◽  
Phenotype Correlation ◽  
Posterior Teeth ◽  
Primary Failure Of Eruption ◽  
Genotype Phenotype Correlation

Abstract Background Primary failure of eruption (PFE) is a hereditary condition, and linkage with variants in the PTH1R gene has been demonstrated in many cases. The clinical severity and expression of PFE is variable, and the genotype–phenotype correlation remains elusive. Further, the similarity between some eruption disorders that are not associated with PTH1R alterations is striking. To better understand the genotype–phenotype correlation, we examined the relationship between the eruption phenotype and PTH1R genotype in 44 patients with suspected PFE and 27 unaffected relatives. Sanger sequencing was employed to analyze carefully selected PFE patients. Potential pathogenicity of variants was evaluated against multiple genetic databases for function prediction and frequency information. Results Mutational analysis of the PTH1R coding sequence revealed 14 different variants in 38 individuals (30 patients and 8 first-degree relatives), 9 exonic and 5 intronic. Their pathogenicity has been reported and compared with the number and severity of clinical signs. In 72.7% of patients with pathogenic variants, five clinical and radiographic criteria have been found: involvement of posterior teeth, involvement of the distal teeth to the most mesial affected, supracrestal presentation, altered vertical growth of the alveolar process and posterior open-bite. In cases with mixed dentition (3), the deciduous molars of the affected quadrant were infraoccluded. Discussion The probability of an affected patient having a PTH1R variant is greater when five specific clinical characteristics are present. The likelihood of an eruption defect in the absence of specific clinical characteristics is rarely associated with a PTH1R mutation. Conclusions We report here that systematic clinical and radiographic observation using a diagnostic rubric is highly valuable in confirming PFE and offers a reliable alternative for accurate diagnosis.

scholarly journals Noninvasive and Multidisciplinary Approach to the Functional and Esthetic Rehabilitation of Amelogenesis Imperfecta: A Pediatric Case Report

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Juliana Feltrin de Souza ◽  
Camila Maria Bullio Fragelli ◽  
Marco Aurélio Benini Paschoal ◽  
Edson Alves Campos ◽  
Leonardo Fernandes Cunha ◽  
...  
Keyword(s):  
Case Report ◽  
Composite Resin ◽  
Preventive Treatment ◽  
Open Bite ◽  
Amelogenesis Imperfecta ◽  
Mixed Dentition ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Anterior Teeth

Case Report. An 8-year-old girl with amelogenesis imperfecta (AI) reported unsatisfactory aesthetics, difficulty in mastication, and dental hypersensitivity. The intraoral examination observed mixed dentition, malocclusion in anteroposterior relationships, anterior open bite, and dental asymmetry. A hypoplastic form of AI was diagnosed in the permanent dentition. A multidisciplinary planning was performed and divided into preventive, orthopedic, and rehabilitation stages. Initially, preventive treatment was implemented, with fluoride varnish applications, in order to protect the fragile enamel and reduce the dental sensitivity. In the second stage, the patient received an interceptive orthopedic treatment to improve cross-relationship of the arches during six months. Finally, the rehabilitation treatment was executed to establish the vertical dimension. In the posterior teeth, indirect composite resin crowns were performed with minimally invasive dental preparation. Direct composite resin restorations were used to improve the appearance of anterior teeth.Follow-Up. The follow-up was carried out after 3, 6, 12, and 18 months. After 18 months of follow-up, The restoration of integrity, oral hygiene, and patient satisfaction were observed .Conclusion. Successful reduction of the dental hypersensitivity and improvement of the aesthetic and functional aspects as well as quality of life were observed.

scholarly journals Microscrew Anchorage in Skeletal Anterior Open-bite Treatment

2007 ◽  
Vol 77 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Chunlei Xun ◽  
Xianglong Zeng ◽  
Xing Wang
Keyword(s):  
Alveolar Bone ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Miniscrew Implants ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Patient Cooperation ◽  
Skeletal Pattern ◽  
Skeletal Open Bite

Abstract Objective: To evaluate the effectiveness of miniscrew anchorage for intrusion of the posterior dentoalveolar region to correct skeletal open bite. Materials and Methods: The study was comprised of 12 patients (aged 14.3 to 27.2 years; mean 18.7 years) with anterior open bites. All the patients presented a Class II skeletal pattern and excessive posterior growth. Self-drilling miniscrew implants were inserted into the posterior midpalatal area and the buccal alveolar bone between the lower molars. A transpalatal and a lingual arch were used to maintain the molars on each side in order to avoid overrotation during intrusion. A force of 150 g was applied to the microscrews on each side to intrude the posterior teeth. Lateral cephalograms of all 12 patients were taken preintrusion and immediately after completion of the intrusion. The cephalometric films were measured and compared. Results: The results showed that the anterior open bites in 12 patients were all corrected in a mean of 6.8 months. Overbite increased by a mean of 4.2 mm (P < .001), from −2.2 mm in preintrusion to 2.0 mm in postintrusion. The maxillary and mandibular first molars were intruded for an average of 1.8 mm (P < .001) and 1.2 mm (P < .001), respectively. The mandibular plane angle was reduced by 2.3° (P < .001), which led to a counterclockwise rotation of the mandible with a significant decrease in the anterior facial heights (mean of 1.8 mm; P < .001). Conclusion: Miniscrew anchorage has the advantages of being a simpler procedure, being minimally invasive, and requiring minimal patient cooperation.

scholarly journals Multiloop edgewise archwire treatment for a patient with a severe anterior open bite and amelogenesis imperfecta

2021 ◽  
Author(s):  
Ahmed I. Masoud ◽  
T. Peter Tsay
Keyword(s):  
Open Bite ◽  
Amelogenesis Imperfecta ◽  
Radiographic Examination ◽  
Orthodontic Appliances ◽  
Plane Angle ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Anterior Teeth ◽  
Mandibular Plane ◽  
Mandibular Plane Angle

ABSTRACT Amelogenesis imperfecta is a rare hereditary disorder that affects dental enamel and is often associated with an anterior open bite. Orthodontic treatment of a 16-year-old female patient with hypocalcified amelogenesis imperfecta and a 9-mm anterior open bite was presented. Radiographic examination revealed a steep mandibular plane angle, an increased lower face height, a Class II skeletal pattern, and a convex profile. Additionally, the patient had stainless steel crowns on all upper and lower posterior teeth and composite veneers on the upper anterior teeth. The patient was treated nonsurgically using a multiloop edgewise archwire (MEAW). MEAW mechanics allowed for successful correction of the anterior open bite, with significant reduction in the mandibular plane angle and improvement in the patient's profile. No fixed retainers were used, results remained stable 78 months after removal of orthodontic appliances. MEAW mechanics should be considered for patients with large anterior open bites, although this technique requires excellent patient compliance.

scholarly journals Open Bite Correction by Intrusion of Posterior Teeth with Miniscrews

2008 ◽  
Vol 78 (4) ◽  
pp. 699-710 ◽  
Author(s):  
Young-Chel Park ◽  
Han-Ah Lee ◽  
Nak-Chun Choi ◽  
Doo-Hyung Kim
Keyword(s):  
Open Bite ◽  
Posterior Teeth

scholarly journals Oral Findings in a Typical Case of Achondroplasia

2003 ◽  
Vol 31 (3) ◽  
pp. 236-238 ◽  
Author(s):  
P Celenk ◽  
S Arici ◽  
C Celenk
Keyword(s):  
Orthodontic Treatment ◽  
Typical Case ◽  
Open Bite ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Posterior Teeth ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Clinical Interest

We report a 16-year-old boy who had all the typical manifestations of achondroplasia but also had a skeletal and dental class III malocclusion, a narrow maxilla, macroglossia and an open bite between the posterior teeth. The narrow maxilla and bilateral cross-bite were treated with rapid palatal expansion. The open bite and irregular teeth were corrected with fixed orthodontic treatment, taking account of the macroglossia. This case is of clinical interest since dental class III malocclusion, posterior open bite, macroglossia and benign migratory glossitis have not previously been reported in achondroplasia.

scholarly journals Replacement of Missing Anterior Teeth in a Patient with Chronic Mouth Breathing and Tongue Thrusting

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Satheesh B. Haralur ◽  
Ali Saad Al-Qahtani
Keyword(s):  
Tooth Loss ◽  
Periodontal Diseases ◽  
Mouth Breathing ◽  
Open Bite ◽  
Nasal Breathing ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Anterior Teeth ◽  
Anterior Guidance ◽  
Patient Will

The loss of anterior teeth has serious functional, esthetic disabilities, in addition to compromising the patients' quality of life. Various etiologies can be attributed to the anterior tooth loss, including trauma, caries, and periodontal diseases. The chronic mouth breathing due to nasal adenoids is known to enhance the gingival and periodontal diseases. The dental literature proves the association of nasal breathing, tongue thrusting, and anterior open bite. Arch shape and tooth position are primarily determined by the equilibrium of the forces from tongue and perioral musculature. Increased force from tongue musculature in the tongue thrusting patient leads to flaring of anterior teeth, making them susceptible for periodontal and traumatic tooth loss. Replacement of the anterior teeth in this patient will also help in restoration of anterior guidance, which is critical for the health of temporomandibular joint, posterior teeth, and musculature.

scholarly journals Evaluation of occlusal factors in patients with temporomandibular joint disorder

2012 ◽  
Vol 17 (6) ◽  
pp. 61-68 ◽  
Author(s):  
Max Dória Costa ◽  
Gontran da Rocha Torres Froes Junior ◽  
Carlos Neanes Santos
Keyword(s):  
Temporomandibular Joint ◽  
Temporomandibular Disorder ◽  
Open Bite ◽  
Control Group ◽  
Temporomandibular Joint Disorder ◽  
Posterior Teeth ◽  
Posterior Crossbite ◽  
Asymptomatic Volunteers ◽  
Anterior Guidance ◽  
Joint Disorder

OBJECTIVE: The aim of this study was to determine the prevalence and the relation between the main occlusal factors and the temporomandibular disorder (TMD). METHODS: We analyzed 100 patients (50 diagnosed with TMD and 50 asymptomatic volunteers, control group) through a questionnaire that classified TMD as absent, mild, moderate and severe. Then, an evaluation was made of intraoral occlusal factors: Absence of posterior teeth, wear facets, overjet, overbite, open bite, posterior crossbite, sagittal relationship (Class I, II and III), centric relation discrepancy for maximum intercuspation, anterior guidance and balancing occlusal interference. The c² examined the association between TMD and considered occlusal variables. RESULTS: The prevalence of studied occlusal factors was higher in patients with moderate and severe TMD. Statistically significant results were found on: Absence of five or more posterior teeth, overbite and overjet greater than 5 mm, edge-to-edge bite, posterior crossbite, Class II and III, the absence of effective anterior guide and balancing side interferences. CONCLUSIONS: Indeed, it is concluded that there is a relationship between TMD and occlusal factors, however it can not be told to what extent these factors are predisposing, precipitating or perpetuating the disease. Therefore, despite its multifactorial etiology, one can not neglect the occlusal analysis of these patients.

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