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1.
Am J Orthod Dentofacial Orthop ; 157(3): 392-407.e2, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32115118

RESUMEN

A 23-year-old woman with condylar resorption and a skeletal Class II pattern and anterior open bite were treated with 4 premolar extractions and temporary skeletal anchorage devices in both maxillary and mandibular arches. Before the start of orthodontic treatment, her unstable condylar position was stabilized with a stabilization splint for 6 months. Sequential evaluation of her condylar position was performed using a mandibular position indicator. The total active orthodontic treatment time was 30 months. After treatment, her occlusion, soft tissue profile, and unstable jaw position were significantly improved. Posttreatment records after 36 months showed excellent results with a good, stable occlusion.


Asunto(s)
Mordida Abierta , Métodos de Anclaje en Ortodoncia , Adulto , Cefalometría , Oclusión Dental , Femenino , Humanos , Mandíbula , Maxilar , Adulto Joven
2.
J Prosthodont ; 29(3): 269-271, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32065435

RESUMEN

In order to provide restorations and dental prostheses that are esthetically pleasing, functional and in harmony with a patient's occlusion, practitioners must have a thorough knowledge of dental anatomy. Recent studies have shown that virtual three-dimensional (3D) models greatly enhance educational outcomes in dental anatomy courses. This article describes a novel educational technique and uses videos and web-based portals to demonstrate how to create a virtual 3D tooth model from a scan of a natural tooth for use in dental anatomy courses.


Asunto(s)
Modelos Dentales , Prótesis Dental , Oclusión Dental , Humanos , Imagen Tridimensional , Estudiantes
3.
Compend Contin Educ Dent ; 41(2): e1-e8, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32017584

RESUMEN

Balanced occlusion is obtained through the interrelationship of the Hanau quint, which includes condylar guidance (CG), incisal guidance (IG), orientation of occlusal plane (OP), compensating curve (CC), and cuspal incline (CI). Once CG and IG are determined, the other three factors of OP, CC, and CI function among each other to balance the occlusion. This article describes a formula that is introduced to quantify a balanced occlusion within the context of the Hanau quint and discusses the limitations of the formula due to individual variabilities of mandibular movements.


Asunto(s)
Oclusión Dental , Dentadura Completa , Mandíbula
4.
Beijing Da Xue Xue Bao Yi Xue Ban ; 52(1): 138-143, 2020 Feb 18.
Artículo en Chino | MEDLINE | ID: mdl-32071477

RESUMEN

OBJECTIVE: To evaluate the three-dimensional (3D) reconstruction accuracy of the intercuspal occlusion (ICO) of the dental casts, by the dental articulator position method, and provide a reference for clinical application. METHODS: The standard dental casts in ICO were mounted on average values articulator, and five pairs of milling resin cylinders were respectively attached to the base of both the casts. 100 µm articulating paper and occlusal record silicone rubber were used to detect the occlusal contact number between the posterior teeth of casts mounted on articulator in ICO. The occlusal contact numbers NA detected by the two methods were calculated simultaneously, as the reference. After the upper and lower casts were scanned separately, and the buccal data of casts in ICO were scanned with the aid of the dental articulator position, registration was carried out utilizing the registration software. Then the digital casts mounted in ICO as well as the buccal occlusal data were saved in standard tessellation language (STL) format. Geomagic Studio 2013 software was used to analyze the contact number NS between digital upper and lower casts by the "deviation analysis" function. The differences were compared between NS and NA, to evaluate the sensitivity and positive predict value (PPV) of the model scanner to reproduce the occlusal contact with the aid of dental articulator position. The distance DR between the centers of the circles at the top surface of the upper and lower corresponding cylinders was obtained by the three-coordinate measuring system Faro Edge, as the reference value. The Geomagic Studio 2013 software was used to construct the cylinders of digital casts and the distance DM between the centers of the circles at the top surface of the corresponding cylinders were measured, as the test value. The one-sample T test was used to analyze the variable differences between DM and DR. RESULTS: The PPV of reproducing the occlusal contact point was 0.76 and sensitivity was 0.81. The distance error of the opposite cylinder was (0.232±0.089) mm. There was no statistical difference between the feature points 5-5', while there were statistical differences between the other feature points. CONCLUSION: By the dental articulator position method, the model scanner reproduces the occlusal contact point with high sensitivity and PPV, and that meets clinical needs. Meanwhile, the distance between the feature points is greater than the reference value, which will lead to occlusal disturbance, and require clinical grinding.


Asunto(s)
Articuladores Dentales , Modelos Dentales , Oclusión Dental , Imagen Tridimensional , Registro de la Relación Maxilomandibular , Programas Informáticos
5.
Pediatr Dent ; 42(1): 55-57, 2020 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-32075712

RESUMEN

The purpose of this article was to present the case of a 13-year-old patient with impacted, ectopic, permanent maxillary canines that were repositioned into their natural positions via autotransplantation without endodontic treatment and aligned into ideal occlusion via orthodontic treatment. The autotransplanted canines demonstrated normal masticatory function, physiologic mobility, and long-term tooth vitality. Clinical considerations, clinical procedures, and the rationale behind this alternative approach in managing this common growth and developmental dental anomaly are also discussed.


Asunto(s)
Diente Canino , Diente Impactado , Adolescente , Atención Odontológica , Oclusión Dental , Humanos , Maxilar , Trasplante Autólogo
6.
J Prosthodont ; 29(2): 185-189, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31919939

RESUMEN

The articulator is a prerequisite device for the analysis of occlusion and prosthodontic treatment, and it is required to simulate patient jaw movements. This article describes the technique to obtain sagittal condylar inclination (SCI) using cone beam computed tomography (CBCT) data and intraoral scan of the protrusive interocclusal position. The SCI can be used on a virtual articulator in a computer-aided design software, and it can assist in the fabrication of prosthesis which is harmonious with the mandibular movement of individual patient.


Asunto(s)
Tomografía Computarizada de Haz Cónico , Articuladores Dentales , Diseño Asistido por Computador , Oclusión Dental , Humanos , Imagen Tridimensional , Registro de la Relación Maxilomandibular , Mandíbula , Cóndilo Mandibular
7.
J Prosthodont ; 29(1): 19-25, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31270888

RESUMEN

PURPOSE: To determine the reliability of T-scan and 3D intraoral scan techniques for assessing the occlusal contact area (OCA), compared to occlusal registration and also to assess the validity of the techniques. MATERIALS AND METHODS: Thirty-one dentate adults participated in this cross-sectional study. T-scan records were used to measure the OCA at maximum bite force and at 50% of maximum force using the software's bite force selection tool. A second method measured the OCA between 2 virtual models scanned intraorally using a 3D surface scan and considering the occlusal contact at 2 interocclusal distances (0-100 and 0-200 µm). The third method measured OCA using occlusal registration at moderate and maximum occlusal force, and considering contact at the 2 interocclusal distances (0-100 and 0-200 µm). Images obtained using the 3 methods were analyzed using ImageJ software. Test-retest reliability was assessed by the intraclass correlation coefficient (ICC) and validity by Pearson correlations. RESULTS: ICCs ranged from 0.56 to 0.79 (p < 0.001) for the T-scan; 0.37 to 0.61 (p < 0.05) for 3D surface scan; and 0.92 to 0.95 (p < 0.0005) for occlusal registration. The highest OCA values were obtained using the T-scan, and the lowest using the 3D surface scan. Occlusal registration measurements had the highest correlations with those of the other techniques. CONCLUSIONS: T-scan is a reliable method for measuring the OCA, but the 3D surface scan is not. Occlusal registration showed a high validity.


Asunto(s)
Oclusión Dental , Imagen Tridimensional , Adulto , Fuerza de la Mordida , Estudios Transversales , Humanos , Registro de la Relación Maxilomandibular , Reproducibilidad de los Resultados
8.
J Prosthet Dent ; 123(1): 79-84, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31079880

RESUMEN

STATEMENT OF PROBLEM: Osseointegrated implants can be prone to occlusal overloading because of the absence of the periodontal ligament and limited tactile sensitivity. However, current scientific evidence of the occlusion variation of implant-supported fixed prostheses is lacking. PURPOSE: The purpose of this clinical study was to analyze changes in occlusal force distribution and occlusal contact in single posterior partial fixed implant-supported prostheses over time. MATERIAL AND METHODS: Partially edentulous patients who had received implant-supported single crowns in the posterior region between December 2012 and December 2013 were enrolled. The participants underwent occlusal examinations by using the T-Scan III system at 0.5, 3, 6, 12, 24, and 36 months after implant prosthesis delivery. The relative occlusal forces (ROFs) of implant prostheses, mesial adjacent teeth, and control natural teeth were recorded, and implant prosthesis occlusion time ratios were calculated. The paired t test was used to compare the implant prosthesis occlusion time ratios and ROFs of implant prostheses at 2 different times as a self-control. The differences in ROFs between implant prostheses and control teeth in the same participant at the same time were also analyzed by using a paired t test. The Pearson correlation coefficient was used to analyze the statistical correlation between implant prosthesis occlusal force and the implant prosthesis occlusion time ratio (α=.05). RESULTS: Thirty-seven posterior partial fixed implant-supported prostheses in 33 participants (18 women and 15 men aged 23.9 to 70 years) were followed up for 3 to 36 months (mean: 31.4 months). The ROFs of implant prostheses increased significantly (P<.05) from 2 weeks (7.46 ±4.21%) to 3 months (9.87 ±6.79%), whereas those of control natural teeth decreased significantly (P<.05) from 13.78 ±6.00% to 11.43 ±5.47%. The ROFs of implant prostheses continued to increase from 6 to 12 months and from 12 to 24 months, with significant differences (P<.05). However, they were statistically similar to those of control natural teeth at 6, 12, 24, and 36 months after restoration. Implant prosthesis occlusion time ratios also increased significantly between 2 weeks and 3 months and between 3 and 6 months (P<.05). No significant differences were found between the other time points (P>.05). CONCLUSIONS: The occlusal force and occlusal contact time of implant prostheses changed significantly with time.


Asunto(s)
Implantes Dentales , Prótesis Dental de Soporte Implantado , Adulto , Anciano , Coronas , Oclusión Dental , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Adulto Joven
9.
J Prosthet Dent ; 123(2): 299-304, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31227235

RESUMEN

STATEMENT OF PROBLEM: The optimal procedure for the transfer of the sagittal inclination of the occlusal plane (OP) to semiadjustable and fully adjustable articulators is unclear. PURPOSE: The purpose of this clinical study was to evaluate and compare the sagittal inclination of the OP with the Frankfort horizontal plane (FHP) on a facebow transfer to semiadjustable and fully adjustable articulators. MATERIAL AND METHODS: Facebow transfers (Hanau Spring-Bow; Whip Mix Corp) of 30 participants were recorded and transferred to a semiadjustable articulator (Hanau Wide-Vue; Whip Mix Corp) using the indirect method. Another set of facebow transfers from the same set of 30 participants using another facebow (Denar Slidematic Facebow; Whip Mix Corp) was recorded and transferred to a fully adjustable articulator (Denar D5A; Whip Mix Corp). The angle between the OP of the mounted cast and the upper member of the articulator was measured in each participant with a digital protractor on both articulators. Standardized lateral cephalograms of each participant were made as a control. The FHP and OP were traced on each standardized lateral cephalogram. The angle on the cephalogram between the FHP and OP was measured. These values were compared with previously measured values for the Hanau Wide-Vue and the Denar D5A articulators. The data were analyzed using ANOVA. Intergroup comparisons between and among the Hanau Wide-Vue, Denar D5A, and lateral cephalograms were performed using the independent t test. RESULTS: No statistically significant difference was found between the Hanau Wide-Vue and Denar D5A articulators compared with the lateral cephalograms (P=.06). In the intergroup comparison, no statistically significant differences were found between the Hanau Wide-Vue and Denar D5A articulators (P=.18). No statistically significant differences were found between the values obtained on the Hanau Wide-Vue and lateral cephalograms (P=.06). When the Denar D5A articulator was compared with the lateral cephalograms, there was a statistically significant difference (P=.02). CONCLUSIONS: The Hanau Wide-Vue articulator most closely replicated the inclination of the OP. Regarding the sagittal inclination of the OP, the semiadjustable articulator can provide more accurate results than a fully adjustable articulator and thus eliminates occlusal errors.


Asunto(s)
Articuladores Dentales , Oclusión Dental , Aparatos de Tracción Extraoral , Cabeza , Humanos , Registro de la Relación Maxilomandibular
10.
J Oral Rehabil ; 47(1): 36-41, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31398263

RESUMEN

BACKGROUND: Phantom bite syndrome (PBS) is characterised by occlusal discomfort without corresponding dental abnormalities. Despite repeated, failed dental treatments, patients with PBS persist in seeking bite correction. PBS has been regarded as a mental disorder. However, we have reported that PBS patients with a dental trigger tend to have less psychiatric history than those without. Hence, the symptoms of PBS cannot be explained by a mental disorder alone, and it is unclear if mental disorders affect occlusal sensation. OBJECTIVE: To elucidate the pathophysiology of PBS, we analysed the dental history, PBS symptom laterality and psychiatric history of patients. METHODS: In this retrospective study, we reviewed outpatients with PBS who presented at our clinic between April 2012 and March 2017. Their medical records were reviewed for demographic data, medical history and laterality of occlusal discomfort. RESULTS: Approximately half of the 199 enrolled patients had bilateral occlusal discomfort. In the others, the side with occlusal discomfort generally tended to be the one that had received dental treatment. There was no significant relationship between the side chiefly affected by occlusal discomfort and whether dental treatment had been received; however, the affected side differed depending on whether the patient had comorbid psychiatric disorders (P = .041). CONCLUSIONS: The distributions of the side with symptoms of PBS were different between those with and without comorbid psychiatric disorders, suggesting that psychiatric disorders might affect occlusal sensation due to a subtle dysfunction in brain areas central to sensory integration. Central dysfunction might play an important role in PBS.


Asunto(s)
Oclusión Dental , Trastorno Depresivo , Humanos , Estudios Retrospectivos , Síndrome
11.
Georgian Med News ; (295): 48-51, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31804198

RESUMEN

Despite the rapid emergence of new devices in the practice of the orthodontist, the topical issue is not only to identify the effectiveness of the use of the proposed methods, but also to justify their economic component. The purpose of the work is to study the economic feasibility of applying the generally accepted and proposed methods during the treatment of sagittal bite anomalies. To assess the economic effect of the proposed technology, a comparison was made between the time spent by the orthodontist and the dental technician when applying the proposed and generally accepted methodology. 130 time tables were analyzed and the time of manufacture and correction of 130 orthodontic appliances was evaluated: 72 elastopozitioners, 36 activators function of the Frenkel and 22 activators of Andrezen-Goipl. As a result of the evaluation of chronometric tables with data on the use of laboratory and clinical time, when using the proposed and conventional devices, it was found that the consumption of time of a dental technician in the manufacture of elastopozitioners is 25 minutes more compared to the process of manufacturing functional double-jaw apparatus (activator Andresen-Goypl and the Frenkl's function regulator). However, from the point of view of saving the clinical time, that is, the time of the orthodontist, elastopozitioners is much more advantageous to use, since they do not need correction. Thus, in the process of assessing the possible economic effectiveness of the proposed methodology, it was found that by introducing individual myofunctional devices, elastopozitioners, into orthodontic practice, it is possible to increase the productivity of the dentist orthodontist almost 10 times.


Asunto(s)
Aparatos Ortodóncicos , Oclusión Dental , Humanos , Aparatos Ortodóncicos/economía
12.
Am J Orthod Dentofacial Orthop ; 156(6): 727-734, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31784006

RESUMEN

INTRODUCTION: Tooth size and morphology of anterior teeth influence interarch relationships. The Bolton analysis uses tooth width to calculate a sum of mandibular to maxillary tooth width ratios necessary for proper occlusion. Several parameters not factored in the Bolton analysis influence occlusion, such as tooth thickness. This study sought to use 3D modeling to develop and assess a tooth size analysis that encompasses labioligual thickness as well as mesiodistal width of anterior teeth. METHODS: The role of tooth thickness in interarch relationships was studied using simulations in a 3D modeling software (Suresmile). To develop a new chart of interarch ratios based on tooth thickness, a series of simulations were produced with varying tooth thicknesses and widths. The new ratios were evaluated on records from 50 patients. RESULTS: Findings from the simulations suggest that the ideal tooth thickness remains approximately 2 mm if the overall tooth width of the dentition increases and the interarch anterior ratio is maintained. The thickness-adjusted anterior mandibular to maxillary tooth ratio ranges from 0.70-0.79 depending on the tooth thickness. This thickness-adjusted ratio provides a superior prediction for the sum of anterior tooth width compared with the Bolton analysis. CONCLUSION: Tooth thickness affects interarch tooth width ratios and anterior occlusion. A thickness-adjusted ratio can be used to more accurately predict anterior tooth dimensions necessary to achieve proper occlusion.


Asunto(s)
Oclusión Dental , Maxilar , Diente , Humanos , Mandíbula , Odontometría
13.
Am J Orthod Dentofacial Orthop ; 156(6): 858-869, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31784020

RESUMEN

A 19-year-old woman with a skeletal Class III pattern, anterior and posterior crossbites, and a low mandibular plane angle was treated with nonextraction camouflage treatment. The total active treatment time was 17 months. After treatment, her occlusion, smile esthetics, and soft tissue profile were significantly improved.


Asunto(s)
Oclusión Dental , Maloclusión de Angle Clase III , Ortodoncia Correctiva , Cefalometría , Estética Dental , Femenino , Humanos , Maloclusión de Angle Clase III/terapia , Sonrisa , Adulto Joven
14.
Int. j. morphol ; 37(4): 1347-1352, Dec. 2019. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1040136

RESUMEN

The objective of the study was to investigate the morphological features of the temporomandibular joint in adult patients with posterior occlusal plane and different inclinations. Fifty five skeletal I occlusion patients with average were included, shooting CBCT in the intercuspal position, divided into 3 groups according to OPP-FH angle, and measurement of the temporomandibular joint morphology was calculated with cone beam computed tomography (CBCT) special software Invivo 5.0, Statistical analysis of three groups of data using SPSS23.0. The condyle usually locates in the middle of the fossa, the maximum axial area of the condyle (A) was statistically significant between the group 1 and the group 3. The internal and external diameter (MD) of the condyle was statistically significant between group 1 and group 3, and group 2 and group 3. The bilateral TMJ morphological features of the three groups were basically symmetrical. The position of the condyle in the fossa is mostly centered, and some of the posterior, the maximum axial area and the internal and external diameter of the condyle are different in three groups.


El objetivo de este estudio fue investigar las características morfológicas de la articulación temporomandibular (ATM) en pacientes adultos con plano oclusal posterior y diferentes inclinaciones. Se incluyeron 55 pacientes con oclusión esquelética tipo I, visualizados por tomografía computarizada de haz cónico (CBCT) en posición intercuspiana, y se dividieron en 3 grupos según el ángulo OPP-FH. La medición morfológica de la articulación temporomandibular se calculó con CBCT y mediante el software especial Invivo 5.0. El análisis estadístico de datos se realizó con el software SPSS 23.0. El cóndilo de la mandíbula generalmente se ubica en el centro de la fosa; el área axial máxima del cóndilo de la mandíbula (A) fue estadísticamente significativa entre los grupos 1 y 3. Los datos de los diámetros medial y lateral (DM) del cóndilo de la mandíbula fueron estadísticamente significativos entre los grupos 1 y 3 y los grupos 2 y 3. Las características morfológicas de la ATM de los tres grupos fueron básicamente simétricas. La posición del cóndilo de la mandíbula en la fosa fue principalmente centrada, y parte del área axial máxima, posterior y los diámetros medial y lateral del cóndilo de la mandíbula fueron diferentes en los tres grupos.


Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Adulto , Adulto Joven , Articulación Temporomandibular/anatomía & histología , Articulación Temporomandibular/diagnóstico por imagen , Oclusión Dental , Tomografía Computarizada de Haz Cónico
15.
Head Face Med ; 15(1): 26, 2019 Nov 04.
Artículo en Inglés | MEDLINE | ID: mdl-31684973

RESUMEN

BACKGROUND: Oral appliances (OAs) are generally designed to displace the mandible anteriorly and downward, to increase the airway patency. The present study aimed to examine the relationship between genioglossus (GG) muscle activity and mandibular position, considering both anterior and vertical displacements during sleep. METHODS: Seven healthy male adults aged 29.4 ± 1.99 years were evaluated. Maxillary and mandibular OAs were fabricated from 2-mm-thick resin plates with pressure-welding. The activity of the left GG was recorded using two silver ball electrodes attached to the lingual edge of the mandibular OA. Respiratory status and right masseter muscle activity were measured by an airflow sensor and surface electrodes, respectively. Electroencephalography was used to determine the sleep status. Stage 2 (the second stage of sleep) was defined as the state of sleeping. Four test conditions with different mandibular positions (0 and 50% anterior protrusion) and bite openings (4 mm and 12 mm) were examined. RESULTS: GG activity in SL4A (4 mm bite opening, 50% protrusion during sleep) and SL12 (12 mm bite opening, 0% protrusion during sleep) were significantly higher than that in SL4 (4 mm bite opening, 0% protrusion during sleep). Respiratory volume did not significantly differ between all test conditions. CONCLUSION: GG activity is influenced not only by anterior protrusion of the mandible but also by vertical displacement during sleep. Thus, when determining the effectiveness of intraoral appliances in the treatment of obstructive sleep apnea, both protrusion and the size of the mandibular opening should be evaluated and taken into account.


Asunto(s)
Mandíbula , Avance Mandibular , Apnea Obstructiva del Sueño , Adulto , Oclusión Dental , Músculos Faciales , Humanos , Masculino , Prótesis e Implantes , Lengua
16.
Int J Oral Maxillofac Implants ; 34(6): 1413-1422, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31711083

RESUMEN

PURPOSE: The aim of this animal study was to evaluate new bone formation in human dentin block grafted on rabbit calvaria according to a comparison of histologic analysis. MATERIALS AND METHODS: Human teeth were prepared according to four different types of dentin blocks: group 1, demineralized and microperforated dentin block; group 2, demineralized dentin block; group 3, undemineralized and microperforated dentin block; group 4, undemineralized dentin block. These four different dentin blocks were grafted on nine rabbit calvaria, and animals were sacrificed at 2, 4, and 8 weeks after the surgical procedure for histologic evaluation. RESULTS: In group 1, histologically, new bone formation was initiated at the interface between demineralized and microperforated dentin block and host bone and microholes at 2 weeks, and mature bone was observed at 8 weeks. In group 3, new bone formation was observed at 8 weeks in the undemineralized and microperforated dentin block bottom and microholes. The bone formation ratio of group 1 was significantly higher at 2, 4, and 8 weeks compared with groups 2, 3, and 4 (P < .05). The bone formation ratio in microholes at 2 and 8 weeks in group 1 was significantly greater than in group 3 (P < .05). CONCLUSION: New bone formation of the demineralized dentin block began more rapidly than the undemineralized dentin block, and perforated dentin block was more effective in bone formation than dentin block without microholes.


Asunto(s)
Regeneración Ósea , Oclusión Dental , Dentina , Animales , Humanos , Osteogénesis , Conejos , Cráneo
17.
Prim Dent J ; 8(3): 20-27, 2019 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-31666169

RESUMEN

The UK has an increasingly ageing population, many of whom are retaining more of their own teeth. This has led to an increase in the prevalence of tooth wear and the need to replace pre-existing failing restorations. In many cases this will be achieved by fixed prosthodontics. This paper provides a brief overview of important occlusal concepts that should be considered when providing non-implant fixed prosthodontics using either a conformative or reorganised approach. The aim is to give general dental practitioners the confidence to provide these types of restorations in primary care. Clinical cases demonstrate how the occlusion can be controlled to optimise clinical outcomes.


Asunto(s)
Cuidado Dental para Ancianos , Oclusión Dental , Prótesis Dental de Soporte Implantado , Prostodoncia , Envejecimiento , Humanos , Diente , Atrición Dental , Desgaste de los Dientes
18.
Prim Dent J ; 8(3): 40-47, 2019 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-31666172

RESUMEN

An accurate interocclusal record is essential for the successful delivery of fixed prosthodontic restorations. There are various materials and techniques used to obtain an interocclusal record in order to facilitate mounting of the dental casts on an articulator. The interocclusal record describes the vertical and horizontal relationship of the maxillary and mandibular teeth. In circumstances where the vertical relationship is not supported through a tripod of widely spaced opposing contacts, the interocclusal record will be needed to restore this vertical support to prevent inaccurate mounting. The clinician should understand when an interocclusal record is required and have an awareness of the different materials and techniques available to record an interocclusal registration.


Asunto(s)
Articuladores Dentales , Modelos Dentales , Oclusión Dental , Dentición , Registro de la Relación Maxilomandibular , Arcada Parcialmente Edéntula , Prostodoncia , Atención Odontológica , Diseño de Dentadura , Humanos , Registro de la Relación Maxilomandibular/instrumentación , Registro de la Relación Maxilomandibular/métodos
19.
J Am Dent Assoc ; 150(11): 960-971, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31668173

RESUMEN

BACKGROUND AND OVERVIEW: Previous studies have suggested that occlusal discrepancy is a risk factor contributing to periodontal disease. Occlusal discrepancy could increase the risk of developing infrabony defects. The authors present a case of a patient with severe periodontitis who exhibited many infrabony defects in the molar region due to malocclusion-induced trauma. They report the 7-year treatment outcomes of the patient after periodontal regenerative and comprehensive orthodontic therapies for functional recovery with implant prosthodontics. CASE DESCRIPTION: A 56-year-old woman sought treatment with the chief symptom of masticatory disturbance. In the molar region, excessive tooth mobility, deep periodontal pockets, and infrabony defects were observed. She had excessive overjet, resulting in collapse of anterior guidance. Malocclusion was considered to be an exacerbating factor of the infrabony defects. After initial periodontal therapy, the authors performed periodontal regenerative therapy in the mandibular molar regions. The authors carefully placed implants in a position in the maxillary molar region that would ensure an appropriate anterior dental relationship after orthodontic treatment. Comprehensive orthodontic treatment was subsequently performed, using implants as anchoring units. Definitive surgery was then performed on the mandibular molars before placing the final prosthesis. Favorable periodontal condition and stable occlusion have been maintained for the 7-year posttreatment period. CONCLUSIONS AND PRACTICAL IMPLICATIONS: Comprehensive and interdisciplinary treatment enables stable occlusion and establishment of periodontal and peri-implant tissues with high cleansability, even in patients with severe periodontitis and malocclusion. In this case, a favorable long-term treatment outcome can be expected.


Asunto(s)
Maloclusión de Angle Clase II , Maloclusión , Periodontitis , Oclusión Dental , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad
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