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1.
J Med Case Rep ; 13(1): 207, 2019 Jul 07.
Artículo en Inglés | MEDLINE | ID: mdl-31279335

RESUMEN

BACKGROUND: Little information is available on the treatment of open bite with temporomandibular joint disorder by intrusion of molars using miniscrews. CASE PRESENTATION: This case report describes a 42-year-old Japanese woman with a skeletal class II severe anterior open bite and temporomandibular joint disorder. The pretreatment magnetic resonance imaging of both temporomandibular joints revealed osteoarthritis and anterior disc displacement without reduction in both temporomandibular joints. A stabilization splint was used before orthodontic treatment and bilateral upper and lower premolars were extracted. Miniscrews were inserted into the palatal region to intrude the maxillary molars and avoid loss of anchorage. The maxillary left first molar was also extracted to improve the molar relationship and the dental midline. Normal overjet and overbite with Angle class I molar relationship were achieved, and the upper and lower midlines coincided. Our patient's teeth continued to be stable and her temporomandibular joint was asymptomatic after a retention period of 2 years. CONCLUSIONS: Intrusion of molars by miniscrews is available for skeletal class II severe open bite.


Asunto(s)
Sobremordida/terapia , Trastornos de la Articulación Temporomandibular/terapia , Técnicas de Movimiento Dental/métodos , Adulto , Tornillos Óseos , Femenino , Humanos , Imagen por Resonancia Magnética , Diente Molar/cirugía , Sobremordida/complicaciones , Sobremordida/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/complicaciones , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Extracción Dental
2.
Am J Orthod Dentofacial Orthop ; 154(4): 554-569, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30268266

RESUMEN

A 33-year-old woman had a chief complaint of difficulty chewing, caused by a constricted mandibular arch and a unilateral full buccal crossbite (scissors-bite or Brodie bite). She requested minimally invasive treatment but agreed to anchorage with extra-alveolar temporary anchorage devices as needed. Her facial form was convex with protrusive but competent lips. Skeletally, the maxilla was protrusive (SNA, 86°) with an ANB angle of 5°. Amounts of crowding were 5 mm in the mandibular arch and 3 mm in the maxillary arch. The mandibular midline was deviated to the left about 2 mm, which was consistent with a medially and inferiorly displaced mandibular right condyle. Ectopic eruption of the maxillary right permanent first molar to the buccal side of the mandibular first molar cusps resulted in a 2-mm functional shift of the mandible to the left, which subsequently developed into a full buccal crossbite on the right side. Treatment was a conservative nonextraction approach with passive self-ligating brackets. Glass ionomer bite turbos were bonded on the occlusal surfaces of the maxillary left molars at 1 month into treatment. An extra-alveolar temporary anchorage device, a 2 × 12-mm OrthoBoneScrew (Newton A, HsinChu City, Taiwan), was inserted in the right mandibular buccal shelf. Elastomeric chains, anchored by the OrthoBoneScrew, extended to lingual buttons bonded on the lingually inclined mandibular right molars. Cross elastics were added as secondary uprighting mechanics. The maxillary right bite turbos were reduced at 4 months and removed 1 month later. At 11 months, bite turbos were bonded on the lingual surfaces of the maxillary central incisors, and an OrthoBoneScrew was inserted in each infrazygomatic crest. The Class II relationship was resolved with bimaxillary retraction of the maxillary arch with infrazygomatic crest anchorage and intermaxillary elastics. Interproximal reduction was performed to correct the black interdental spaces and the anterior flaring of the incisors. The scissors-bite and lingually inclined mandibular right posterior segment were sufficiently corrected after 3 months of treatment to establish adequate intermaxillary occlusion in the right posterior segments to intrude the maxillary right molars. The anterior bite turbos opened space for extrusion of the posterior teeth to level the mandibular arch, and the infrazygomatic crest bone screws anchored the retraction of the maxillary arch. In 27 months, this difficult malocclusion, with a Discrepancy Index score of 25, was treated to a Cast-Radiograph Evaluation score of 22 and a pink and white esthetic score of 3.


Asunto(s)
Tornillos Óseos , Oclusión Dental , Maloclusión de Angle Clase II/diagnóstico , Maloclusión de Angle Clase I/terapia , Mandíbula/cirugía , Métodos de Anclaje en Ortodoncia/instrumentación , Métodos de Anclaje en Ortodoncia/métodos , Sobremordida/terapia , Adulto , Cefalometría , Modelos Dentales , Femenino , Humanos , Incisivo/patología , Maloclusión de Angle Clase I/diagnóstico , Maloclusión de Angle Clase II/terapia , Mandíbula/diagnóstico por imagen , Maxilar/diagnóstico por imagen , Diente Molar/patología , Mordida Abierta/terapia , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos , Aparatos Ortodóncicos Removibles , Soportes Ortodóncicos , Alambres para Ortodoncia , Ortodoncia Correctiva , Sobremordida/complicaciones , Sobremordida/diagnóstico , Sobremordida/diagnóstico por imagen , Planificación de Atención al Paciente , Radiografía Panorámica , Técnicas de Movimiento Dental/instrumentación , Resultado del Tratamiento , Dimensión Vertical
3.
Int Orthod ; 16(2): 361-373, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29685399

RESUMEN

INTRODUCTION: The aim of this regression analysis was to identify the determining factors, which impact the curve of Spee during its genesis, its therapeutic reconstruction, and its stability, within a continuously evolving craniofacial morphology throughout life. MATERIAL AND METHODS: We selected a total of 107 patients, according to the inclusion criteria. A morphological and functional clinical examination was performed for each patient: plaster models, tracing of the curve of Spee, crowding, Angle's classification, overjet and overbite were thus recorded. Then, we made a cephalometric analysis based on the standardized lateral cephalograms. In the sagittal dimension, we measured the values of angles ANB, SNA, SNB, SND, I/i; and the following distances: AoBo, I/NA, i/NB, SE and SL. In the vertical dimension, we measured the values of angles FMA, GoGn/SN, the occlusal plane, and the following distances: SAr, ArD, Ar/Con, Con/Gn, GoPo, HFP, HFA and IF. The statistical analysis was performed using the SPSS software with a significance level of 0.05. RESULTS: Our sample including 107 subjects was composed of 77 female patients (71.3%) and 30 male patients (27.8%) 7 hypodivergent patients (6.5%), 56 hyperdivergent patients (52.3%) and 44 normodivergent patients (41.1%). Patients' mean age was 19.35±5.95 years. The hypodivergent patients presented more pronounced curves of Spee compared to the normodivergent and the hyperdivergent populations; patients in skeletal Class I presented less pronounced curves of Spee compared to patients in skeletal Class II and Class III. These differences were non significant (P>0.05). The curve of Spee was positively and moderately correlated with Angle's classification, overjet, overbite, sellion-articulare distance, and breathing type (P<0.05). We found no correlation between age, gender and the other parameters included in the study with the curve of Spee (P>0.05). Seventy five percent (75%) of the hyperdivergent patients with an oral breathing presented an overbite of 3mm, which is quite excessive given the characteristics often admitted for this typology; this parameter could explain the overbite observed in the hyperdivergent population included in this study. For the multivariate analysis, the overbite and the sellion-articulare distance remained independently related to the curve of Spee according to the breathing type, Angle's classification, and overjet. This regression model explains 21.4% of the changes in the curve of Spee.


Asunto(s)
Arco Dental/anatomía & histología , Maloclusión/clasificación , Maloclusión/complicaciones , Sobremordida/clasificación , Sobremordida/complicaciones , Adolescente , Adulto , Puntos Anatómicos de Referencia , Cefalometría/métodos , Oclusión Dental , Cara/anatomía & histología , Femenino , Humanos , Incisivo/anatomía & histología , Masculino , Maloclusión de Angle Clase II/clasificación , Maloclusión de Angle Clase II/complicaciones , Mandíbula/anatomía & histología , Análisis Multivariante , Análisis de Regresión , Estadísticas no Paramétricas , Dimensión Vertical , Adulto Joven
4.
J Orofac Orthop ; 79(1): 29-38, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29260241

RESUMEN

BACKGROUND: Usually, morphological parameters of the teeth are recorded to help assess the indication for orthodontic treatment. It is assumed that significant deviations from average values compromise the quality of life. The aim of this study is to analyse the impact of overbite and overjet on oral health-related quality of life (OHRQoL) of children and adolescents. PATIENTS AND METHODS: A total of 748 subjects, aged 9.5-15.5 years, participated in the LIFE child project of the University of Leipzig, where they underwent a general medical and dental examination. Overbite and overjet were measured, and aberrations of the OHRQoL were recorded by the probands themselves, who completed the German version of the Child Perceptions Questionnaire (CPQ-G11-14). The OHRQoL is divided into four domains ("oral symptoms", "functional limitations", "emotional well-being" and "social well-being") and is analysed by means of a CPQ score depending on age, gender, socioeconomic status and orthodontic treatment. RESULTS: On average, the participants listed 10.5 (±13.1) problem issues on a CPQ scale ranging from 0 to 140. Subjects with current orthodontic treatment had a CPQ score about 2.5 (±2.4) higher than those without treatment. The aberrations were mainly observed in the domains "oral symptoms" and "functional limitations". Multiple linear regression showed that deviations of the overbite had only little influence on the OHRQoL, but deviations of an overjet-especially of >6 mm increased the CPQ summary score about 6 points. CONCLUSION: Children and adolescents with overjet deviations of >6 mm in comparison to the norm are associated with significant limitations of the OHRQoL. However, overbite deviations have only little influence.


Asunto(s)
Salud Bucal , Sobremordida/complicaciones , Calidad de Vida , Adolescente , Niño , Femenino , Alemania , Humanos , Masculino , Ortodoncia Correctiva/psicología , Sobremordida/diagnóstico , Sobremordida/psicología , Sobremordida/terapia , Calidad de Vida/psicología
5.
Dental Press J Orthod ; 22(4): 102-112, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28902256

RESUMEN

The orthodontic treatment of patients with chief complaint of temporomandibular disorders (TMD) presents doubtful prognosis, due to the poor correlation between malocclusions and TMDs. The present case report describes the treatment of an adult patient with Angle Class II Division 2 subdivision left malocclusion associated with anterior deep overbite and TMD. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO), as part of the requirements to obtain the title of BBO Diplomate.


Asunto(s)
Maloclusión de Angle Clase II/complicaciones , Sobremordida/complicaciones , Trastornos de la Articulación Temporomandibular/complicaciones , Humanos , Masculino , Maloclusión de Angle Clase II/terapia , Ortodoncia Correctiva , Sobremordida/terapia , Adulto Joven
6.
Am J Orthod Dentofacial Orthop ; 152(1): 104-115, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28651755

RESUMEN

This report describes the use of miniscrew-assisted customized lingual fixed appliances in a patient with severe skeletal Class II malocclusion. The patient was a 12-year-old Chinese girl with the chief complaint of protrusive lips and anterior teeth. Her diagnosis included a skeletal Class II relationship with maxillary protrusion, a backward-rotated mandible, a full Angle Class II molar relationship, and severe deep overjet and overbite. Four premolars were extracted, and miniscrew anchorage was placed in the maxillary posterior lingual segment to provide maximum anchorage and to achieve vertical control of the intruding molars. The customized lingual fixed appliance and temporary anchorage devices created a smooth and invisible treatment progress, resulting ultimately in a well-aligned dentition with ideal intercuspation and a dramatically improved profile. The 3-year follow-up examination indicated that the excellent treatment outcome was stable.


Asunto(s)
Maloclusión de Angle Clase II/terapia , Ortodoncia Correctiva/métodos , Sobremordida/terapia , Niño , Modelos Dentales , Femenino , Humanos , Maloclusión de Angle Clase II/complicaciones , Maloclusión de Angle Clase II/diagnóstico por imagen , Ortodoncia Correctiva/instrumentación , Sobremordida/complicaciones , Sobremordida/diagnóstico por imagen , Radiografía Panorámica
7.
Angle Orthod ; 87(4): 603-609, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28195497

RESUMEN

OBJECTIVE: To compare the mixed dentition incisor and molar overjet, severity of contraction of the dental arch, and the sagittal molar relationship on the cleft side vs the noncleft side in children with repaired complete unilateral cleft of the lip and palate (UCLP). MATERIALS AND METHODS: Orthodontic records taken prior to orthodontic preparation for alveolar bone grafting were screened to select study casts from patients with nonsyndromic repaired complete UCLP who did not have mandibular skeletal or dental asymmetry. The study sample comprised dental casts from 74 children aged 8.9 ± 1 years. Standardized digital photographs were acquired at 1:1 magnification. A coordinate system was developed using digital image-processing software (Photoshop CS4 and Adobe Illustrator). Incisor and molar overjet, Angle's classification, and arch contraction were recorded. Descriptive statistics, paired t-tests, and kappa statistics were used to compare the cleft and noncleft sides. RESULTS: A negative overjet of -1 to -5 mm was often present at the incisors, with greater frequency and magnitude on the cleft side. Class II molar relation was more frequent on the cleft side (61.1%) than on the noncleft side (47.2%). Significantly greater contraction of the cleft side deciduous canine and deciduous first molar was noted, while the difference was very minor at the first permanent molar. CONCLUSIONS: Cleft side maxillary arch contraction was most severe in the deciduous canine and first deciduous molar region and progressively less severe in the posterior region of the arch. A greater frequency and severity of negative overjet and Class II molar relationship was seen on the cleft side.


Asunto(s)
Labio Leporino/cirugía , Fisura del Paladar/cirugía , Arco Dental/anomalías , Maloclusión de Angle Clase II/complicaciones , Sobremordida/complicaciones , Niño , Modelos Dentales , Dentición Mixta , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Masculino , Desarrollo Maxilofacial , Estudios Retrospectivos
8.
J Contemp Dent Pract ; 18(1): 65-68, 2017 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-28050989

RESUMEN

INTRODUCTION: Malocclusions with anterior crossbite are a major esthetic and functional concern for patients. This case report presents a 27-year-old Syrian female who was diagnosed with a class 3 malocclusion, combined with anterior crossbite, deep bite, concave profile, and inadequate maxillary incisor exposure. There was a centric occlusion (CO)/centric relation (CR) discrepancy and the mandible could be manipulated to near edge-to-edge incisal relation. Correction was done by class 3 intermaxillary elastics on upper and lower mini-implants for the first 6 months, followed by preadjusted edgewise appliance. The objective of implant-supported elastics was to adapt the patient for the CR condylar position without dental effect. Treatment was completed in 24 months with satisfactory dental and facial relationship.


Asunto(s)
Implantes Dentales , Maloclusión de Angle Clase III/terapia , Ortodoncia Correctiva/métodos , Sobremordida/terapia , Adulto , Elasticidad , Femenino , Humanos , Maloclusión de Angle Clase III/complicaciones , Maxilar , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos , Ortodoncia Correctiva/instrumentación , Sobremordida/complicaciones , Factores de Tiempo , Resultado del Tratamiento
10.
Stomatologiia (Mosk) ; 95(2): 37-47, 2016.
Artículo en Ruso | MEDLINE | ID: mdl-27239996

RESUMEN

The aim of the study was to apply an effective treatment protocol with low morbidity for children with syndromic and nonsyndromic micrognathia using curvilinear distractors, intraoral approach and early orthodontic treatment. We report 7 patients aged from 3 to 13 years with bilateral mandibular hypoplasia. These patients were characterized by severe malocclusion, esthetic facial deformation and respiratory disorders. In 3 patients mandibular hypoplasia was combined with anterior open bite. The intraoral surgical approach was used in all cases. Good functional and esthetic results were achieved during treatment. The less traumatic intraoral approach, curvilinear distractors, ultrasound callus formation control and early orthodontic treatment assure the good functional and esthetic results in severe cases facilitating the continuinty in complex rehabilitation of the growing child.


Asunto(s)
Mandíbula/anomalías , Micrognatismo/rehabilitación , Mordida Abierta/rehabilitación , Ortodoncia Correctiva/instrumentación , Sobremordida/rehabilitación , Adolescente , Niño , Preescolar , Femenino , Humanos , Masculino , Mandíbula/cirugía , Osteotomía Mandibular/métodos , Micrognatismo/complicaciones , Micrognatismo/cirugía , Mordida Abierta/complicaciones , Mordida Abierta/cirugía , Sobremordida/complicaciones , Sobremordida/cirugía
11.
Vojnosanit Pregl ; 73(7): 682-5, 2016 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-29314803

RESUMEN

Introduction: Full impaction of canines, in both jaws, is a rare phenomenon. It is usually coupled with the persistence of deciduous canines, or any other irregularity in the dental arch. Case report: Panoramic radiograph of a 24-year-old female patient showed bilateral canine impaction in both jaws. Due to vestibular, apical and medial position of canines in the upper jaw, the surgical approach implied the apically positioned flap technique. The position of impacted mandibular canines was vertical with more coronal position relative to the upper canines, thus requiring a closed eruption technique. Conclusion: Inadequate position of impacted canines in the bone fully justifies the use of orthodontic-surgical treatment.


Asunto(s)
Diente Canino/cirugía , Diastema/terapia , Soportes Ortodóncicos , Sobremordida/terapia , Diente Impactado/cirugía , Diente Canino/diagnóstico por imagen , Femenino , Humanos , Sobremordida/complicaciones , Radiografía Panorámica , Diente Impactado/complicaciones , Diente Impactado/diagnóstico por imagen , Adulto Joven
12.
Dent Traumatol ; 31(1): 1-8, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25263806

RESUMEN

BACKGROUND/AIM: The association between large overjet and traumatic dental injuries (TDIs) to anterior teeth is documented. However, observational studies are discrepant and generalizability (i.e. external validity) of meta-analyses is limited. Therefore, this meta-analysis sought to reconcile such discrepancies seeking to provide reliable risk estimates which could be generalizable at global level. MATERIAL AND METHODS: Literature search (years 1990-2014) was performed (Scopus, GOOGLE Scholar, Medline). Selected primary studies were divided into subsets: 'primary teeth, overjet threshold 3-4 mm' (Primary3); 'permanent teeth, overjet threshold 3-4 mm' (Permanent3); 'permanent teeth, overjet threshold 6 ± 1 mm' (Permanent6). The adjusted odds ratios (ORs) were extracted. To obtain the highest level of reliability (i.e. internal validity), the pooled OR estimates were assessed accounting for between-study heterogeneity, publication bias and confounding. Result robustness was investigated with sensitivity and subgroup analyses. RESULTS: Fifty-four primary studies from Africa, America, Asia and Europe were included. The sampled individuals were children, adolescents and adults. Overall, there were >10 000 patients with TDI. The pooled OR estimates resulted 2.31 (95% confidence interval - 95CI, 1.01-5.27), 2.01 (95CI, 1.39-2.91) and 2.24 (95CI, 1.56-3.21) for Primary3, Permanent3 and Permant6, respectively. Sensitivity and subgroup analyses corroborated these estimates. CONCLUSIONS: Reliability and generalizability of pooled ORs were high enough and made it possible to assess that the fraction of global TDIs attributable to large overjet is 21.8% (95CI, 9.7-34.5%) and that large overjet is co-responsible for 235 008 000 global TDI cases (95CI, 104,760,000-372,168,000). This high global burden of TDI suggests that preventive measures must be implemented in patients with large overjet.


Asunto(s)
Sobremordida/complicaciones , Traumatismos de los Dientes/etiología , Humanos , Factores de Riesgo
13.
J Craniomaxillofac Surg ; 42(8): 1604-9, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24958156

RESUMEN

OBJECTIVE: To investigate temporomandibular disorders (TMD), psychosocial, and occlusal variables in class III orthognathic surgery patients with respect to the control subjects, and to compare psychosocial and occlusal features in class III patients with different Research Diagnostic Criteria for TMD (RDC/TMD) diagnoses. MATERIALS AND METHODS: The study enrolled 44 class III patients referred for orthognathic surgery and 44 individuals without a malocclusion. TMD, depression and somatization were assessed by RDC/TMD. Occlusal analysis included Helkimo's Occlusal Index items, overjet and overbite. RESULTS: In the controls, patients with class III deformities had higher prevalence of myogenic TMD, increased grade of chronic pain, and more occlusal deviations. Within the study group, TMD patients reported higher depression score (P < 0.01), myofascial pain was related to higher depression and somatization grades (P < 0.01, P < 0.05 respectively), and disc displacement showed relation with RCP-ICP slide interferences (P < 0.05). CONCLUSION: With respect to subjects without a malocclusion, TMD in class III dentofacial deformities is similar in prevalence, but differs in clinical appearance. Occlusal, but not psychosocial features deviate from those in the controls. While psychosocial variables accompanied TMD and myofascial pain, increased RCP-ICP slide was related to disc displacement in class III patients.


Asunto(s)
Maloclusión de Angle Clase III/complicaciones , Procedimientos Quirúrgicos Ortognáticos , Trastornos de la Articulación Temporomandibular/complicaciones , Adolescente , Adulto , Estudios de Casos y Controles , Dolor Crónico/complicaciones , Estudios Transversales , Oclusión Dental Céntrica , Depresión/psicología , Dolor Facial/complicaciones , Femenino , Humanos , Luxaciones Articulares/complicaciones , Masculino , Maloclusión de Angle Clase III/psicología , Sobremordida/complicaciones , Trastornos Somatomorfos/psicología , Disco de la Articulación Temporomandibular/patología , Trastornos de la Articulación Temporomandibular/psicología , Síndrome de la Disfunción de Articulación Temporomandibular/complicaciones , Adulto Joven
14.
J Prosthodont ; 23(5): 406-11, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24393501

RESUMEN

Increasing the vertical dimension is essential to resolving problems associated with deep bite. Restorative dentistry, orthodontia, and oral surgery are the three disciplines that can help to gain the vertical dimension necessary in these patients. This clinical report presents the results of increasing vertical dimension with a full-mouth restorative treatment procedure for a 40-year-old male patient who exhibited severe deep bite. After clinical evaluation, extraoral examination showed a reduction of the lower facial height and protuberant lips, wrinkles, drooping, and overclosed commissures. In addition, intraoral examination showed a severe anterior deep-bite articulation, and upper incisors were in contact with the lower incisor labial tissue. A removable partial denture was made at increased occlusal vertical dimension (OVD) to use in the first stage of rehabilitation. Diagnostic wax-up was performed at the increased vertical dimension. Then, provisional crowns were fabricated according to this increased vertical dimension. Interim prostheses were used for 3 months as a guide for preparing the definitive restorations. The adaptation of the patient to the increased OVD was evaluated. During this period, he was asymptomatic. Following the evaluation period, definitive restorations were completed, and routine clinical assessments were made after 1 week, 1 month, 3 months, and 6 months, then after 1 and 2 years with visual and radiographic examinations.


Asunto(s)
Maloclusión de Angle Clase II/complicaciones , Rehabilitación Bucal/métodos , Sobremordida/complicaciones , Adaptación Fisiológica/fisiología , Adulto , Relación Céntrica , Coronas , Oclusión Dental Céntrica , Restauración Dental Provisional , Dentadura Parcial Removible , Dentadura Parcial Provisoria , Estudios de Seguimiento , Humanos , Registro de la Relación Maxilomandibular , Arcada Parcialmente Edéntula/complicaciones , Arcada Parcialmente Edéntula/rehabilitación , Masculino , Maloclusión de Angle Clase II/terapia , Aleaciones de Cerámica y Metal/química , Sobremordida/terapia , Planificación de Atención al Paciente , Dimensión Vertical
16.
Angle Orthod ; 84(2): 310-5, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-23957663

RESUMEN

OBJECTIVES: To assess the association of several dental malocclusion features with temporomandibular joint (TMJ) click sounds in a population of temporomandibular disorder (TMD) patients. MATERIALS AND METHODS: Four hundred forty-two TMD patients (72% female; 32.2 ± 5.7 years, range 25-44 years) were divided into a TMJ clicking and a no-TMJ clicking group, based on the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) assessment. Seven occlusal features were recorded for each patient: (1) posterior crossbite, (2) overbite, (3) open bite, (4) overjet, (5) mediotrusive and (6) laterotrusive interferences and (7) retruded contact position to maximum intercuspation (RCP-MI) slide length. A logistic regression model was created to estimate the association of occlusal features with TMJ clicking. RESULTS: The difference between the groups as for the prevalence of the various occlusal features was generally not statistically significant, with minor exceptions. Mediotrusive interferences (P  =  .015) and RCP-MI slide ≥2 mm (P  =  .001) were the two occlusal features that were associated with the probability of having TMJ clicking, even if the adjusted odds ratios for TMJ clicking were low for both variables (1.63 and 1.89, respectively). Moreover, the amount of variance in the prevalence of TMJ clicking that was predicted by the final model was as low as 4.5% (R(2)  =  0.045). CONCLUSIONS: Findings from the present investigation suggested that in a population of TMD patients, the contribution of dental malocclusion features to predict TMJ click sounds is minimal with no clinical relevance.


Asunto(s)
Maloclusión/complicaciones , Trastornos de la Articulación Temporomandibular/complicaciones , Adulto , Diente Premolar/patología , Oclusión Dental Céntrica , Femenino , Humanos , Incisivo/patología , Registro de la Relación Maxilomandibular/métodos , Modelos Logísticos , Masculino , Diente Molar/patología , Mordida Abierta/complicaciones , Sobremordida/complicaciones , Sonido , Trastornos de la Articulación Temporomandibular/fisiopatología
18.
Am J Orthod Dentofacial Orthop ; 144(4): 583-93, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-24075667

RESUMEN

INTRODUCTION: In nongrowing patients with skeletal Class II malocclusion, premolar extraction or maxillary distalization can be used as camouflage treatment. Zygomatic anchorage enables distalization in uncooperative or noncompliant patients. We describe 1 such procedure in a 24-year-old woman. METHODS: We used novel improved superelastic nickel-titanium archwires combined with nickel-titanium open-coil springs to provide a constant and continuous low force to the dentition. RESULTS: We were able to successfully eliminate the protrusive profile and correct the Class II molar relationship using this system of zygomatic anchorage. The posterior occlusal relationships were improved to achieve Class I canine and molar relationships on both sides, and ideal overbite and overjet relationships were established. Facial esthetics was improved with decreased protrusion of the upper and lower lips. CONCLUSIONS: The method used here is a promising alternative to traditional distalization techniques and might offer an effective and simple means of distalizing maxillary molars in uncooperative patients.


Asunto(s)
Maloclusión de Angle Clase II/terapia , Métodos de Anclaje en Ortodoncia , Alambres para Ortodoncia , Técnicas de Movimiento Dental/métodos , Placas Óseas , Cefalometría , Aleaciones Dentales , Elasticidad , Asimetría Facial/complicaciones , Asimetría Facial/terapia , Femenino , Humanos , Maloclusión de Angle Clase II/complicaciones , Maxilar , Diente Molar , Níquel , Diseño de Aparato Ortodóncico , Sobremordida/complicaciones , Sobremordida/terapia , Titanio , Hábitos Linguales/efectos adversos , Hábitos Linguales/terapia , Adulto Joven , Cigoma/cirugía
19.
Int J Orthod Milwaukee ; 24(2): 63-4, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23941034

RESUMEN

Patients with deep bites or crossbites often need temporary bite opening to prevent mandibular brackets from being sheared off and to allow unobstructed tooth movement. Here we present a simple auxiliary occlusal extension for temporary bite opening to correct an anterior crossbite. The bite plane is hygienic, less intrusive to the tongue space and prevents supra-eruption of the adjacent as well as opposing teeth.


Asunto(s)
Maloclusión/complicaciones , Maloclusión/terapia , Ferulas Oclusales , Sobremordida/complicaciones , Adolescente , Humanos , Aparatos Ortodóncicos Removibles , Sobremordida/terapia , Dimensión Vertical
20.
Oral Health Prev Dent ; 11(1): 31-8, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23507679

RESUMEN

PURPOSE: To assess the prevalence of traumatic dental injuries to permanent anterior teeth in 9- to 14-year-old schoolchildren attending public schools in Anápolis, Brazil, and to investigate the association between the occurrence of these injuries and the size of incisal overjet and type of lip coverage. MATERIALS AND METHODS: A cross-sectional survey and a two-stage cluster sampling technique were used. The sample size included 765 9- to 14-year-old schoolchildren. Data were collected through clinical examinations and interviews carried out by a trained, calibrated dentist. Oral examinations dealt with the type of traumatic dental injury (TDI), the treatment received, the size of incisal overjet and the type of lip coverage. The teeth examined were maxillary and mandibular incisors. RESULTS: A 16.5% prevalence of dental trauma was found. Boys experienced double the number of girls' injuries. The maxillary central incisors were the teeth most affected, totaling 84.8%. The most frequent type of injury found was enamel fracture (66%), followed by enamel-dentin fracture (27%) and enamel cracks (5%). Only 26% of traumatised teeth were restored. Children with an overjet size > 3 mm were 1.78 times (CI= 1.18 - 2.69) more likely to have a dental injury than children with an overjet size <= 3 mm. Children with inadequate lip coverage were 2.18 times (CI= 1.27 - 3.76) more likely to experience dental trauma than children whose lip coverage was adequate. CONCLUSION: This study shows that the prevalence of traumatic dental injuries among schoolchildren in Anápolis, Brazil is similar to that of other regions in Brazil. The teeth most affected by dental trauma are the maxillary central incisors. Boys run a 2.03-times higher risk of crown fracture than girls, and children with an overjet size > 3 mm are 1.78 times more likely to have dental injuries. In addition, children with inadequate lip coverage are 2.18 times more likely to present traumatic dental injuries than children with adequate lip coverage.


Asunto(s)
Sobremordida/complicaciones , Traumatismos de los Dientes/epidemiología , Adolescente , Brasil/epidemiología , Niño , Estudios Transversales , Dentición Permanente , Femenino , Humanos , Incisivo/lesiones , Labio/anatomía & histología , Modelos Logísticos , Masculino , Maxilar , Prevalencia , Factores de Riesgo , Factores Sexuales , Traumatismos de los Dientes/etiología
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