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1.
Artigo em Inglês | MEDLINE | ID: mdl-35472111

RESUMO

The clinical syndrome known as posterior bite collapse (PBC) consists of multiple, often pathognomonic factors that deviate from normal, or an occlusion wherein the posterior occlusion is compromised and may ultimately destroy the functional protective capacity of the entire dentition. Secondary clinical sequelae may include accelerated periodontitis progression, temporomandibular disorders (TMD), increasing mobility/fremitus, additional tooth loss, anterior flaring, and loss of occlusal vertical dimension. Etiologic factors may include tooth loss without replacement, orthodontic malocclusions and dentoskeletal disharmonies, periodontitis, accelerated retrograde occlusal/interproximal wear, severe caries, or iatrogenic and conformative dentistry. Not all PBC cases require treatment, but treatment is dependent upon the periodontium's stability and its ability to maintain its form and function. Treatment decisions can also be dependent upon periodontal health, caries, function, occlusion, TMD, esthetics, and phonetics. The purpose of this article is to provide general treatment guidelines based on form and function of the masticatory system for restoring a PBC case when treatment is necessary. This article does not discuss specific mechanics for restoring PBC cases.


Assuntos
Má Oclusão , Periodontite , Transtornos da Articulação Temporomandibular , Perda de Dente , Oclusão Dentária , Humanos , Periodontite/complicações , Periodontite/terapia , Transtornos da Articulação Temporomandibular/complicações , Perda de Dente/complicações , Dimensão Vertical
2.
Gen Dent ; 70(3): 65-71, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35467547

RESUMO

The aims of this study were to evaluate the prevalence of temporomandibular disorders (TMDs) in children between 6 and 12 years of age in the city of Qom, Iran, and explore the associations between TMDs and both malocclusion and anxiety. This study was conducted in 193 children who were assessed via interview, clinical examination, and the parent version of the Spence Children's Anxiety Scale. Clinical examinations consisted of assessment of asymmetry, joint sounds, jaw movements (functional shift, temporomandibular joint pain on opening, limitations on mouth opening, and mandibular deviation from midline on mouth opening), and masticatory muscles (sensitivity of masseter and temporalis muscles on palpation and dysfunction of pterygoid muscles). The presence of malocclusion and parafunctional habits were also evaluated. The data were analyzed using chi-square and independent t tests. The associations between anxiety and the quantitative variables of the study were analyzed with the Pearson correlation coefficient. The total prevalence of TMDs in this sample was 17.1%. Most children with TMDs had a moderate anxiety level, and the anxiety score had a significant correlation with the presence of TMDs (P = 0.000). There was a significant relationship between Class II malocclusion and TMDs as well as between Class III malocclusion and TMDs. The most common oral habit was placing a pencil or other objects between the teeth. No significant relationships were observed between the prevalence of TMDs and the sex and age groups. This study showed significant relationships between TMDs and anxiety, malocclusion, and parafunctional habits.


Assuntos
Má Oclusão , Transtornos da Articulação Temporomandibular , Adolescente , Ansiedade , Criança , Estudos Transversais , Humanos , Má Oclusão/complicações , Má Oclusão/epidemiologia , Prevalência , Transtornos da Articulação Temporomandibular/complicações , Transtornos da Articulação Temporomandibular/epidemiologia
3.
Dental Press J Orthod ; 27(1): e2220406, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35416864

RESUMO

INTRODUCTION: The relationship between temporomandibular disorders (TMDs) and orthodontic treatment/malocclusion has changed from a cause-and-effect association to an idea without sufficient evidence. OBJECTIVE: This survey was designed to assess the beliefs of different disciplines - orthodontists, oral surgeons, and oral medicine specialists - on the relationship between TMDs and orthodontic treatment, with regard to treatment, prevention and etiology of TMDs. METHOD: A survey in the form of questionnaire was designed and distributed to 180 orthodontists, 193 oral surgeons and 125 oral medicine specialists actively involved in treating TMDs. The questionnaire aimed to collect basic information about each participant and their beliefs, and clinical management of patients with TMDs. RESULTS: Halve of the responding orthodontists and most of the oral surgeons (69.9%) were male participants, whereas the majority of oral medicine specialists (83.3%) were female respondents. The participants' age ranged from 29 to 58 years. The majority of orthodontists believes that there is no relationship between orthodontic treatment and TMDs, and that orthodontic treatment does not provoke TMDs or prevent the onset of the disorder. However, oral surgeons and oral medicine specialists have different and conflicting opinions. Most surgeons tended to treat those patients, while most of the other two disciplines tended to seek an interdisciplinary approach. Chi-square test was done to find an association between the referral status and specialists' experience, and to compare between the different disciplines' belief. CONCLUSIONS: Orthodontist's beliefs were in accordance with the scientific evidence, whereas most oral surgeons and oral medicine specialist believed that orthodontic treatment may provoke TMDs. Therefore, continuing program series development is important to embrace the concept of the multidisciplinary team approach and improve the health care and quality of life for those patients.


Assuntos
Má Oclusão , Ortodontia , Transtornos da Articulação Temporomandibular , Adulto , Feminino , Humanos , Masculino , Má Oclusão/terapia , Pessoa de Meia-Idade , Ortodontistas , Qualidade de Vida , Inquéritos e Questionários , Transtornos da Articulação Temporomandibular/etiologia , Transtornos da Articulação Temporomandibular/terapia
4.
Georgian Med News ; (324): 45-54, 2022 Mar.
Artigo em Russo | MEDLINE | ID: mdl-35417862

RESUMO

An integrated approach to diagnosis and preparation of a treatment plan gives us the opportunity to carry out a fully correct treatment. Working with skeletal forms of occlusion anomalies, it is necessary to take into account the severity of maxillofacial changes in order to choose a treatment algorithm. For this purpose, an index has been developed to assess the severity of dental anomalies. To create the index, 120 patients with varying degrees of severity of mesial and distal occlusion were examined. The analysis of dental casts, telerentgenograms of the head in lateral projection and photometric examination were carried out. After analyzing the data, an index was created that reliably proves the severity of maxillofacial anomalies, which is the justification for choosing a method of treatment for patients. The proposed technique is a convenient express method for the diagnosis and planning of treatment of dental anomalies.


Assuntos
Má Oclusão , Humanos , Má Oclusão/diagnóstico por imagem , Má Oclusão/terapia
5.
Prog Orthod ; 23(1): 13, 2022 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-35434773

RESUMO

OBJECTIVE: To produce a guide for dentists and orthodontists to determine orthodontic treatment need in borderline cases (dental health component DHC 3) and to compare views of different panels of judges on treatment need. MATERIALS AND METHODS: Prospective, observational study. Photographs of one hundred subjects displaying borderline occlusal traits (DHC3) were collected. Three panels of judges consisting of 25 orthodontists, 25 dentists and 25 lay persons assessed photographs based on orthodontic treatment need on aesthetic grounds. RESULTS: Spearman's correlation coefficient showed no statistical difference between the panels of judges (p < 0.001). The judges identified a 'high need' for treatment on aesthetic grounds for those with anterior open bites and reverse overjets. Kappa analysis showed moderate intra-rater agreement for the orthodontic and dental panels of judges (k = 0.47 and 0.45, respectively) and fair agreement (k = 0.26) for the lay panel, highlighting the intrinsic difficulty of assessing borderline malocclusions. CONCLUSION: There was no statistical difference in the way the orthodontic, dental and lay panels of judges perceived treatment need for DHC 3 cases. Anterior open bites and reverse overjets were predominantly found to be in high need of treatment by all panels of judges. A 'Guide to Borderline Orthodontic Need' (GBON) is proposed consisting of 8 photographs of subjects with borderline occlusal traits (DHC3) determined unambiguously by lay, dental and orthodontic panels as either 'needing' or 'not needing' orthodontic treatment on aesthetic grounds. It is anticipated that this will assist users to make judgments on aesthetic grounds on the need for treatment in borderline cases.


Assuntos
Má Oclusão , Mordida Aberta , Sobremordida , Estética Dentária , Humanos , Má Oclusão/diagnóstico , Má Oclusão/terapia , Ortodontia Corretiva , Estudos Prospectivos
6.
Ulus Travma Acil Cerrahi Derg ; 28(5): 698-702, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35485479

RESUMO

BACKGROUND: The aim of our study is to examine the possible complications, risk factors, and solutions encountered in orthog-nathic surgery in the light of the cases; we performed in our clinic. METHODS: This study includes a retrospective analysis of the records of 85 patients who underwent orthognathic surgery between 2015 and 2020 in Istanbul Pendik District Hospital Oral and Maxillofacial Surgery Service. The types of complications encountered during the operations were recorded in the study. Independent variables such as gender, age, number of operations, surgical site, and type of osteotomy were evaluated. Complications were evaluated according to the Clavien-Dindo classification. The data were pre-sented for statistical analysis with a significance level of 0.05. RESULTS: Of the 85 patients included in the study, 40 were male and 45 were female. Of these patients, 65 had double chin operation and 20 had single chin operation. A total of 150 jaw osteotomies were performed, 78 of them in the maxilla and 72 in the mandible. While the maxilla was operated in 13 of the cases, in which single jaw operation was performed, only the mandible was treated in 7 of them. Complications were observed in 24 (10.57%) of a total of 227 osteotomies. Among the complications encountered, bleeding (8), nerve damage (7), malocclusion (3), infection (2), TMJ problems (2), bad split (1), and deviation at the tip of the nose (1) stand out, while complications were observed equally in men and women, complications were observed more frequently in cases with longer operative time (p<0.05). Complications were observed more frequently in bilateral sagittal split osteotomies (p<0.001) compared to Le Fort 1 osteotomies. Clavien-Dindo grade I complications were most common (72.04%) depending on the treatment. According to the Clavien-Dindo classification, there was no relationship between gender, age, duration of surgery, length of hospital stay, or surgical site, and the degree of complications (p≥0.05). CONCLUSION: Post-operative malocclusion, bleeding, inferior alveolar nerve injury, infection, poor division, and infection are the most common complications in orthognathic surgery. It can be associated with factors such as the duration of the operation, the number of operations, the site of the operation, and the type of osteotomy which performed. It is thought that positive contributions can be made to the success of the surgery by considering these factors in the treatment planning, during the operation and in the post-operative follow-up part.


Assuntos
Má Oclusão , Cirurgia Ortognática , Procedimentos Cirúrgicos Ortognáticos , Feminino , Humanos , Tempo de Internação , Masculino , Procedimentos Cirúrgicos Ortognáticos/efeitos adversos , Estudos Retrospectivos
7.
BMC Oral Health ; 22(1): 149, 2022 04 28.
Artigo em Inglês | MEDLINE | ID: mdl-35484618

RESUMO

BACKGROUND: Only a few studies have used 3D cone-beam computed tomography (CBCT) analysis to evaluate the positional and morphological characteristics of the temporomandibular joint (TMJ) in adults with skeletal Class II. No studies have focused on the case of skeletal Class II with mandibular retrognathism in different vertical skeletal patterns. As a result, this study aimed to evaluate and compare the position and morphology of TMJ in adults with skeletal Class II with mandibular retrognathism in different vertical skeletal patterns to the position and morphology of TMJ in the normal Chinese adult population in three dimensions. METHODS: This retrospective study analyzed CBCT images of 80 adult patients. Subjects with skeletal Class II with a normal sagittal position of the maxilla and mandibular retrognathism were classified according to the mandibular angle and facial height ratio into three groups of 20 subjects each: hypodivergent, normodivergent, and hyperdivergent groups, as well as a control group of 20 subjects. The following 3D measurements of TMJ were evaluated: (1) position, parameters, and inclination of the mandibular fossa; (2) position, parameters, and inclination of the mandibular condyle; (3) condyle centralization in their respective mandibular fossae; (4) anterior, posterior, superior, and medial joint spaces; and (5) 3D volumetric measurements of the TMJ spaces. Measurements were statistically analyzed by one-way ANOVA test, followed by Tukey's post hoc test. RESULTS: Significant differences were found in the hyperdivergent and hypodivergent groups compared with the normal group in the vertical and anteroposterior mandibular fossa position, vertical condylar inclination, and condylar width and length. The hyperdivergent group showed the significantly highest condylar inclination with the midsagittal plane; anterior and superior positioning of the condyle; smallest anterior, superior, and medial joint spaces; and largest volumetric total joint space relative to the two other groups. CONCLUSIONS: The condyle-fossa position and morphology differ with various vertical facial patterns in individuals with skeletal Class II mandibular retrognathism. These differences could be considered during TMD diagnosis and orthodontic treatment.


Assuntos
Má Oclusão , Retrognatismo , Adulto , Humanos , Côndilo Mandibular/anatomia & histologia , Côndilo Mandibular/diagnóstico por imagem , Retrognatismo/diagnóstico por imagem , Estudos Retrospectivos , Articulação Temporomandibular/diagnóstico por imagem
8.
Artigo em Inglês | MEDLINE | ID: mdl-35409726

RESUMO

BACKGROUND: There is lack of data related to dental occlusion among children cured from cancer. The aim of our study was to compare the prevalence of malocclusion in cancer survivors and in healthy peers. METHODS: A cross-sectional study was conducted on 225 children aged between 4 and 18 years, including 75 cancer survivors, and 150 sex and age-matched controls. All patients were orthodontically examined and malocclusion traits were recorded. In the cancer group, 75 panoramic radiographs were used to evaluate the prevalence of dental anomalies and dental age using the Demirjian scale. Data were analyzed by univariate statistical analysis with p-values p < 0.05 considered as statistically significant. RESULTS: Malocclusion was found in 49 (65.33%) cancer survivors and 99 (65.56%) controls (p > 0.05). The cancer group demonstrated significantly higher likelihood of crossbite (p < 0.01) and malalignment of teeth (p = 0.031). The healthy controls were more likely to demonstrate open bite (p = 0.038). Cancer patients with posterior crossbite (p = 0.023) or dental malalignment had a more advanced dental age (p = 0.022). Survivors with crossbite had more teeth with short roots (p = 0.016). Those who were older when they started their cancer therapy were more likely to suffer from tooth disturbances (p = 0.019). CONCLUSION: Oncological treatment can alter the development of occlusion in cancer patients.


Assuntos
Má Oclusão , Neoplasias , Dente , Adolescente , Criança , Pré-Escolar , Estudos Transversais , Nível de Saúde , Humanos , Má Oclusão/epidemiologia , Neoplasias/epidemiologia , Prevalência
9.
Sci Rep ; 12(1): 6230, 2022 Apr 14.
Artigo em Inglês | MEDLINE | ID: mdl-35422071

RESUMO

This clinical trial compared the time to complete the levelling and alignment stage with flapless piezocision procedure in the treatment of severe maxillary malocclusion with premolar extraction cases. Two-arm parallel group randomized controlled trial was performed at the Orthodontics Unit of Universiti Sains Malaysia, Malaysia. Sixteen patients with severe anterior maxillary crowding (Little's irregularity index: 7-9 mm) and required bilateral first premolars extraction was recruited. The participants were randomly assigned to a study group according to a simple randomization method using a sealed envelope mentioned about the group name. Both groups were treated with fixed orthodontic appliance using the 0.022-in. slot of McLaughlin Bennett Trevisi prescription brackets. The piezocision group received flapless piezocision corticotomy about 4-5 mm in length and 3 mm depth on the labial mucogingiva between the roots of six anterior teeth. The number of days since treatment started, Little's irregularity index, gingival recession, pocket depth, pulp vitality, patient perception of the pain and satisfaction level were recorded before the treatment, at about 1 month and 2 months post-treatment, and at the completion of the levelling and alignment stage. The overall time to complete levelling and alignment stage was significantly shorter in the piezocision group than the control group (mean difference = 31.5 days, 95% CI 6.5, 56.5; p = 0.018). Greater reduction in Little's irregularity index and faster alignment rate in the first 2 months  were found in the piezocision group compared to the control group (p < 0.05). No changes in the gingival recession, pocket depth, and pulp vitality in both groups were observed. Patients who received piezocision surgery experienced no or mild pain and were satisfied with the treatment. Flapless piezocision corticotomy is an effective adjunct that shortens treatment time during levelling and alignment stage without any adverse effects on the teeth and surrounding tissues. It is also painless, acceptable and satisfactory to the patients.Trial registration: ACTRN12621001350819.


Assuntos
Retração Gengival , Má Oclusão , Dente Pré-Molar/cirurgia , Humanos , Má Oclusão/terapia , Dor , Técnicas de Movimentação Dentária/métodos
10.
BMC Oral Health ; 22(1): 127, 2022 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-35428238

RESUMO

BACKGROUND: Occlusal cant (OC) is a malocclusion trait lacking indexing or classification that describes the extent and severity of tilt in the occlusal plane. The aims of this study were to develop an occlusal cant index (OCI) based on the degree of OC detection among orthodontists and laypeople and to validate the newly developed OCI by a panel of experts using content validity. METHODS: The ability to perceive OC was assessed in 134 participants (orthodontists = 67 and laypeople = 67). A frontal photograph of a model with an ideal smile with 0° of OC was obtained and manipulated to create various degrees of OC from 1-5° at the right and left sides. A set of 11 electronic photographs was displayed to the participants. The participants were asked to report whether they detected an OC in each photograph. The collected data was used as a baseline to develop an OCI. Then, a content validation of the OCI was performed using a questionnaire provided to a panel of experts comprising ten orthodontists. RESULTS: The OCI was designed based on the threshold of OC detection. In both orthodontists and laypeople, the accuracy of OC detection increased as the amount of tilt increased. The threshold point of OC detection in orthodontists was at 2°, while in laypeople it was at 4°. There was a significant difference between orthodontists and laypeople in their ability to detect OC at 2-3° of tilt. The content validity index (CVI) showed excellent validity between the item-level CVI and the scale-level CVI of the OCI. CONCLUSION: The OCI was developed and implemented for diagnostic, communication, and research purposes. The index showed strong evidence supporting content validity.


Assuntos
Estética Dentária , Má Oclusão , Oclusão Dentária , Humanos , Má Oclusão/diagnóstico , Ortodontistas , Sorriso
11.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 57(4): 358-365, 2022 Apr 09.
Artigo em Chinês | MEDLINE | ID: mdl-35368162

RESUMO

Objective: To explore the establishment of an efficient and automatic method to determine anatomical landmarks in three-dimensional (3D) facial data, and to evaluate the effectiveness of this method in determining landmarks. Methods: A total of 30 male patients with tooth defect or dentition defect (with good facial symmetry) who visited the Department of Prosthodontics, Peking University School and Hospital of Stomatology from June to August 2021 were selected, and these participants' age was between 18-45 years. 3D facial data of patients was collected and the size normalization and overlap alignment were performed based on the Procrustes analysis algorithm. A 3D face average model was built in Geomagic Studio 2013 software, and a 3D face template was built through parametric processing. MeshLab 2020 software was used to determine the serial number information of 32 facial anatomical landmarks (10 midline landmarks and 22 bilateral landmarks). Five male patients with no mandibular deviation and 5 with mild mandibular deviation were selected from the Department of Orthodontics or Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology from June to August 2021. 3D facial data of patients was collected as test data. Based on the 3D face template and the serial number information of the facial anatomical landmarks, the coordinates of 32 facial anatomical landmarks on the test data were automatically determined with the help of the MeshMonk non-rigid registration algorithm program, as the data for the template method to determine the landmarks. The positions of 32 facial anatomical landmarks on the test data were manually determined by the same attending physician, and the coordinates of the landmarks were recorded as the data for determining landmarks by the expert method. Calculated the distance value of the coordinates of facial anatomical landmarks between the template method and the expert method, as the landmark localization error, and evaluated the effect of the template method in determining the landmarks. Results: For 5 patients with no mandibular deviation, the landmark localization error of all facial anatomical landmarks by template method was (1.65±1.19) mm, the landmark localization error of the midline facial anatomical landmarks was (1.19±0.45) mm, the landmark localization error of bilateral facial anatomical landmarks was (1.85±1.33) mm. For 5 patients with mild mandibular deviation, the landmark localization error of all facial anatomical landmarks by template method was (2.55±2.22) mm, the landmark localization error of the midline facial anatomical landmarks was (1.85±1.13) mm, the landmark localization error of bilateral facial anatomical landmarks was (2.87±2.45) mm. Conclusions: The automatic determination method of facial anatomical landmarks proposed in this study has certain feasibility, and the determination effect of midline facial anatomical landmarks is better than that of bilateral facial anatomical landmarks. The effect of determining facial anatomical landmarks in patients without mandibular deviation is better than that in patients with mild mandibular deviation.


Assuntos
Má Oclusão , Ortodontia , Adolescente , Adulto , Algoritmos , Pontos de Referência Anatômicos , Cefalometria/métodos , Face/anatomia & histologia , Feminino , Humanos , Imageamento Tridimensional/métodos , Masculino , Pessoa de Meia-Idade , Software , Adulto Jovem
12.
Head Face Med ; 18(1): 13, 2022 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-35413855

RESUMO

BACKGROUND: Understanding the anatomical relationship between the maxillary sinus floor (MSF) and the posterior maxillary teeth (PMT) is important when planning the orthodontic intrusion of the posterior teeth. This study aimed to determine the vertical relationship between posterior maxillary teeth and maxillary sinus floor in different skeletal classes in the Chinese adult population. METHODS: This is a retrospective cross-sectional study involved cone beam computed tomography images of 298 adult patients (145 males and 153 females) between 20 and 45 years old. The sample was categorized according to A point, Nasion, B point (ANB) angle into 102 Class I, 102 Class II, and 94 Class III malocclusion. Non-parametric Wilcoxon Mann-Whitney U and Kruskal-Wallis tests were used to compare the studied groups. The Intra-class Correlation Coefficient (ICC) was used to assess the intra- and inter-observer reliability analysis. RESULTS: Overall, there was a statistically significant difference in the mean distance between both genders (P < 0.001). The measured distance increased with age in all posterior tooth roots (P < 0.001). The root apex in the sagittal view appeared to be closer to the maxillary sinus than in the coronal view; 2.2 ± 4.3 and 3.1 ± 5.5 mm, respectively. The most frequent root scores were Type 1 and Type 2P. In both sagittal and coronal views, Class I demonstrated a higher Type 2P prevalence, whereas Class III showed a lower prevalence. The second molars' mesiobuccal root had the largest number of penetration in the three examined skeletal classes. CONCLUSIONS: Maxillary molars of Class I malocclusion with the majority of Type 2P root-sinus relationship have the highest possible risk of root resorption during molar intrusion due to cortical bone encroachment, while Class III malocclusion showed the least possible risk.


Assuntos
Má Oclusão , Levantamento do Assoalho do Seio Maxilar , Adulto , Tomografia Computadorizada de Feixe Cônico/métodos , Estudos Transversais , Feminino , Humanos , Masculino , Maxila/diagnóstico por imagem , Seio Maxilar/diagnóstico por imagem , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Estudos Retrospectivos , Raiz Dentária/diagnóstico por imagem , Adulto Jovem
13.
Biomed Res Int ; 2022: 7604144, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35392262

RESUMO

Background: Premature loss of deciduous teeth can lead to loss of space and have a negative effect on occlusion. The use of space maintainers can reduce the severity of problems such as crowding. However, the literature is controversial regarding the effects of early loss of primary first molars The aim of this study was to determine the factors affecting the need for unilateral space maintainer for the first deciduous molars in late mixed dentition. In this cross-sectional study, fifty children between 6 to 8 years who had lost a primary first molar unilaterally later than 6 months ago were randomly selected. Midline deviation, molar and canine relationships at both sides, facial growth pattern, and the amount of space loss were all assessed. Data were analyzed using SPSS version 25 via one-sample t-test, paired t-test, and linear regression (alpha = 0.05). Methods: In this cross-sectional study, 47 children aged 8 to 10 years with early unilaterally loss of first primary molar in the past 6 months were randomly selected. First, the type of occlusion based on the angle molar relationship and the growth pattern of face based on the Hall and Farkas and midline were assessed. Anterior crowding was measured. SPSS 25 program and Chi-square, t-test, ANOVA, and linear regression were used to analyze the data. A significance level of 0.05 was considered. Results: The results showed that the amount of space loss is 0.56 mm (maxilla = 0.54 and mandible = 0.58), which is not clinically significant, and there is no need for space maintainer. Increasing age (p = 0.021) and increasing the percentage ratio of facial pattern (p = 0.009) significantly reduced the space loss and increased the duration of tooth loss (p = 0.002), and molar relationship in the control side (p = 0.05) and increasing the canine to lateral distance (p = 0.016) significantly increased the space loss. Other factors such as crowding, midline deviation, and canine relationship on the control side did not have significant effects on space loss. Conclusion: Space loss due to extraction of the first primary molars in late mixed dentition was neither statistically nor clinically significant. However, in cases of severe crowding, the vertical growth pattern of the face, and molar relationship, further studies are needed, and follow-up of patients is recommended.


Assuntos
Dentição Mista , Má Oclusão , Estudos Transversais , Humanos , Maxila , Dente Molar , Dente Decíduo
14.
Am J Orthod Dentofacial Orthop ; 161(5): 739-745, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35317950

RESUMO

It is not uncommon for orthodontists to encounter patients whose malocclusion results, at least in part, from an underlying skeletal discrepancy. In many patients, these discrepancies can be fully corrected with growth modification with or without dental compensation to achieve a Class I occlusal relationship. A subset of patients with moderate skeletal deformities in whom surgery is ideally indicated but who choose to defer surgical treatment may be at risk for long-term adverse consequences on facial esthetics. As a surgeon who performs both orthognathic and facial esthetic surgery, the senior author has had the opportunity to appreciate the contributions of underlying skeletal deformities to his patients' esthetic concerns. These patients often present years after orthodontic treatment with complaints of early facial soft tissue laxity, facial disproportion, and overall dissatisfaction with facial appearance. The authors hope to illustrate to the orthodontic community the clinical picture of adult patients who present to the offices of surgeons dissatisfied with their appearance secondary to the uncorrected skeletal deformity. This paper aims to increase orthodontists' awareness of the long-term effects of uncorrected skeletal dysplasia on facial appearance. The ultimate goal is to allow the informed consent process to incorporate these esthetic consequences and to facilitate patient decision making. This article serves as Part I of a 2-part series reviewing a surgeon's approach to patients who present with facial skeletal disharmony after orthodontic treatment with dental compensation.


Assuntos
Má Oclusão , Procedimentos Cirúrgicos Ortognáticos , Cirurgiões , Adulto , Estética Dentária , Face/cirurgia , Humanos , Má Oclusão/complicações , Má Oclusão/cirurgia , Procedimentos Cirúrgicos Ortognáticos/métodos
15.
Artigo em Inglês | MEDLINE | ID: mdl-35329087

RESUMO

Oral diseases such as dental caries and periodontal disease are reported to be associated with various systemic diseases such as heart disease, respiratory disease, diabetes, rheumatism, and metabolic syndrome, thus increasing the importance of prevention and early treatment [...].


Assuntos
Cárie Dentária , Má Oclusão , Síndrome Metabólica , Doenças Periodontais , Adolescente , Cárie Dentária/complicações , Cárie Dentária/epidemiologia , Humanos , Má Oclusão/complicações , Má Oclusão/etiologia , Síndrome Metabólica/complicações , Doenças Periodontais/complicações , Doenças Periodontais/epidemiologia
16.
Artigo em Inglês | MEDLINE | ID: mdl-35329130

RESUMO

(1) Background: A large number of patients of orthodontic clinics are diagnosed with improper jaw relationships. Intraoral scanners have become an important part of orthodontic practice and provide an opportunity to measure the changes in the width of dental arches. The purpose of the study was to evaluate the impact of removable appliances used over a 10-month period on growth changes in children with narrowed jaw dimensions. (2) Methods: Twenty four patients were included in the study (a study group-patients, treated with removable appliances in the upper dental arch for a minimum of 10 months; a control group-patients with no craniofacial abnormalities and who did not require orthodontic treatment). A panoramic radiograph and digital intraoral scan were taken, followed by palatal width measurements in Ortho-CAD before treatment, and after a period of 10 months of treatment with removable appliances. (3) Results: After a period of 10 months of the treatment, the study group had a statistically significantly greater mean change in the anterior width of the upper dental arch than the control group. (4) Conclusions: The use of removable appliances in children with narrowed maxillary transverse dimension contributes to offsetting growth changes in comparison to children with normal occlusion.


Assuntos
Má Oclusão , Aparelhos Ortodônticos Removíveis , Dente , Criança , Arco Dental/diagnóstico por imagem , Humanos , Má Oclusão/diagnóstico por imagem , Má Oclusão/terapia , Maxila
17.
Sci Rep ; 12(1): 3997, 2022 03 07.
Artigo em Inglês | MEDLINE | ID: mdl-35256726

RESUMO

To analyze the etiological factors behind the malocclusion of a Late Pleistocene woman (named Naia), who is the best-preserved of the earliest individuals of the American continent. The examination of Naia's malocclusion was performed through cephalometric and occlusal analyses, and by measuring her mandible. Her data were then compared to published data for modern, medieval, and postmedieval samples and seven Late Pleistocene individuals. Naia presented her permanent dentition fully erupted, except for the impacted mandibular third molars. She presented a class II molar malocclusion with crowding. The dental widths and mandible measurements were similar to or smaller than modern standards. The degree of dental wear was light. The cephalometric analysis confirmed a skeletal class II relationship, with a retrusive mandible and protruded upper incisors. Naia's mild level of dental wear is consistent with a low masticatory force, in a time when the norm was a high amount of grinding. The low masticatory forces help explain Naia's small jaws and crowding. However, it does not clarify Angle's class II relationship. Naia is an example that environmental factors are insufficient to explain the onset of malocclusions and emphasizes the importance of understanding hereditary factors' role.


Assuntos
Má Oclusão Classe II de Angle , Má Oclusão , Desgaste dos Dentes , Cefalometria , Feminino , Humanos , Recém-Nascido , Mandíbula , México
18.
BMC Oral Health ; 22(1): 88, 2022 03 23.
Artigo em Inglês | MEDLINE | ID: mdl-35321719

RESUMO

BACKGROUND: Malocclusion is highly reported among mixed dentition cases. Therefore, we aimed to determine the relationship of dental malocclusions in the vertical, transverse, sagittal planes with deleterious habits in pediatric patients. METHODS: A cross-sectional analytical study was carried out on 155 children aged 6-12 years attended at the clinic of the School of Dentistry of Universidad Nacional Mayor de San Marcos in 2017. RESULTS: Among 155 evaluated patients, 45.3% had vertical malocclusion, 52.0% had sagittal malocclusion and 13.6% had transverse malocclusion. The most frequent type of malocclusion in the vertical plane was anterior deep bite (22.2%), in the transverse plane, the edge-to-edge bite (7.1%) and the anterior crossbite (6.5%) were less frequent. Finally, in the sagittal plane, Class II Div 1 (20%) and Class III (20.7%) were the most frequent. Among the most common deleterious habits, anteroposition (58.7%) and mixed breathing (51.0%) were observed in contrast to the habit of retroposition, lip sucking and mouth breathing, which were the least frequent. Considering age and sex, children who have an atypical swallowing habit are more likely to have malocclusion in all three planes of space. CONCLUSIONS: It is concluded that there is an association between the deleterious habits with the different types of malocclusions in the different planes of the space, being the atypical swallowing a habit that should be early diagnosed and treated interdisciplinary.


Assuntos
Má Oclusão , Criança , Estudos Transversais , Dentição Mista , Sucção de Dedo/efeitos adversos , Hábitos , Humanos , Má Oclusão/complicações , Prevalência
19.
J Bodyw Mov Ther ; 29: 26-32, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-35248280

RESUMO

BACKGROUND: Studies have demonstrated a relationship between dental malocclusion and posture defects. The aims of the study were to present (1) the effect of a physiotherapeutic approach to a patient with a distal occlusion defect with the use of a set of exercises to strengthen the muscles responsible for mandibular protrusion, and (2) a non-invasive and easy-to-use method to monitor the effects of therapy. METHODS: Five year old girl with a distal occlusion and with a low basic postural tone was referred to physiotherapy. A therapeutic program i.a. concerning a strengthening of the temporomandibular joint muscles with the use of a flexible tape was proposed. To assess the functional changes of the masticatory apparatus a photoanthropometric method was used. In side-face photos, proportions of 2 linear measurements and values of two angles on the first day of therapy, after 2 and after 4 months of exercises, with the mandible located freely and in the maximum protrusion were compared. RESULTS: A comparison of indices and angles showed a marked improvement in mandibular mobility already after two and four months of the exercises. Using the elastic resistance tape in addition to general developmental exercises allowed for increasing the mobility in the temporomandibular joint. CONCLUSION: Malocclusion should not be considered separately, without taking into account the body posture. The work of the physiotherapist can benefit the orthodontist, correcting postural defects and consequently affecting malocclusion. A comparison of linear measurements and angles can be used to assess the progress of the therapy.


Assuntos
Má Oclusão , Transtornos da Articulação Temporomandibular , Pré-Escolar , Feminino , Humanos , Má Oclusão/terapia , Mandíbula , Postura/fisiologia , Articulação Temporomandibular , Transtornos da Articulação Temporomandibular/terapia
20.
Comput Math Methods Med ; 2022: 2399323, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35309837

RESUMO

Background: The study investigates the existing correlation between self-perceived malocclusion, the psychosocial impact of dental esthetics, and whether this link involves personality traits. Methods: The 179 questionnaires from 615 undergraduates in Wenzhou were used for analysis after applying the exclusion criteria. The Psychosocial Impact of the Dental Aesthetics Questionnaire (PIDAQ) was administered to evaluate participants' perceptions of the psychosocial impacts of malocclusion. The need for orthodontic treatment was assessed using the Index of Orthodontic Treatment Need (IOTN). The Chinese version of the Eysenck Personality Questionnaire-Short Scale (EPQ-RSC) evaluated participants' personality characteristics. The Kruskal-Wallis test was used to assess differences between the IOTN-Dental Health Component (DHC) and expectations of orthodontic treatment. Linear regression was applied with PADAQ and its subscale scores against possible variables. Results: The total and subscale PIDAQ scores were positively correlated with neuroticism. Total PIDAQ scores, the DHC, and the Aesthetic Component (AC) were significantly positively correlated with the subjective AC. The DHC was significantly negatively correlated with extroversion. Conclusions: We confirmed a modest link between the need for orthodontic treatment and the psychosocial impact of dental esthetics.


Assuntos
Estética Dentária/psicologia , Má Oclusão/psicologia , Adolescente , China , Biologia Computacional , Estudos Transversais , Feminino , Humanos , Índice de Necessidade de Tratamento Ortodôntico , Masculino , Má Oclusão/terapia , Personalidade , Autoimagem , Estudantes , Inquéritos e Questionários , Adulto Jovem
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