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Prim Dent J ; 10(1): 120-125, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33722126


Tooth wear is increasing in prevalence within the United Kingdom. Treatment of tooth surface loss can be daunting for both the clinician and patient. However, use of additive resin composite restorations is a minimally invasive treatment modality. This case illustrates the treatment of tooth surface loss in both the maxillary and mandibular arches with direct composites restorations using putty indices generated from a diagnostic wax-up recorded in centric relation. The tooth surface loss had resulted in reduced restorative space on the right hand side. The restorative treatment involved increasing the anterior vertical dimension, enabling the provision of a cobalt-chrome partial denture. This case shows the restoration of form, function and aesthetics using a reorganised occlusal approach.

Implantes Dentales , Desgaste de los Dientes , Resinas Compuestas , Restauración Dental Permanente , Humanos , Desgaste de los Dientes/diagnóstico , Desgaste de los Dientes/terapia , Reino Unido , Dimensión Vertical
J Prosthodont ; 30(S1): 12-19, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33783090


PURPOSE: Patients in need of extensive prosthodontic treatment may need restoration of their occlusal vertical dimension (OVD) due to tooth wear, tooth loss, or changes that have occurred to existing prostheses over time. Prosthodontic treatment is based on the clinical application of the available evidence regarding interocclusal distance (IOD), the positional stability of rest vertical dimension (RVD), and the effect of altering the OVD. Hence, the purpose of this consensus document is to examine available data related to IOD, RVD, and alteration of the OVD. MATERIALS AND METHODS: The search was limited to Clinical trials, Randomized Controlled Trials, Systematic Reviews and Meta-analyses. Key words were healthy patient, mean, range, interocclusal rest distance; healthy patient, mean, range, freeway space; and dentistry, interocclusal gap, and no citations appeared. Dentistry, interocclusal distance, revealed 5 not relevant citations. Dentistry, inter occlusal rest space, and dentistry, interocclusal rest distance, both had the same single not relevant citation. Dentistry, freeway space revealed over 7,000 citations. Dentistry, occlusal vertical dimension, revealed 253 citations, 7 of which were related to the search question but only 1 which was different from the previous search. Mandible, rest vertical dimension, age changes, found 7 citations, none relative to the question. Expanding the search to include journal article found 260 citations with only one relevant to the question. Mandible, rest vertical dimension, alteration, harm revealed no citations; mandible, occlusal vertical dimension, alteration, revealed 15 citations, 1 of which was relevant; mandible, occlusal vertical dimension, changes, revealed 75 citations, none of which were relevant; mandible, occlusal vertical dimension, rehabilitation revealed 10 citations, none of which were relevant. Expanding the search strategy to include Journal article, mandible, occlusal vertical dimension, alteration, received 159 citations, 4 of which were relevant; mandible, occlusal vertical dimension, restoration revealed 208 citations, 1 of which was relevant. Numerous other articles were culled by going through the reference lists of the aforementioned articles. RESULTS: For IOD, 27 articles were found relevant to the search question, which confirmed a mean of 3.0 mm with ranges from 1 to 9 mm. Five articles revealed little evidence as to whether the RVD changes during life. For OVD, 20 articles, including 4 systematic reviews, revealed some evidence that skeletal growth continues from mid adolescence into mid adulthood; strong anecdotal evidence that some unopposed teeth will continue to erupt; no clinical evidence to support the concept that abraded teeth in occlusion in a patient with bruxism will undergo continuous eruption; and some evidence from clinical case reports that restoring OVD in patients with severe abrasion is a successful treatment. CONCLUSIONS: There is a range of dimensions for the interocclusal distance (IOD) with many normal dental patients functioning with a higher or lower IOD than the commonly used 3.0 mm average dimension. The resting vertical dimension (RVD) is a 3-dimensional range with little evidence related to changes in the RVD during life. However, aging can cause a decrease in muscle tone which could affect the RVD. The restoration of the OVD can be successfully accomplished if proper diagnosis and treatment planning are performed.

Oclusión Dental , Mandíbula , Adulto , Consenso , Humanos , Prostodoncia , Dimensión Vertical
Am J Orthod Dentofacial Orthop ; 159(3): 281-291, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33487496


INTRODUCTION: The purpose of this study was to determine the esthetic preferences of people at different levels of society and also to determine whether this preference is affected by sex, age, education level, social status, geographic region, and individual profile factors. METHODS: Facial profile photographs of 1 man and 1 woman, each having a profile designated as ideal (the ideal profile), were digitized. The sagittal and vertical dimensions of these photographs were modified, and 9 variations of each profile picture were obtained using different combinations of alterations. The photographs were scored by 373 participants. For the analysis, Mann-Whitney U and Kruskal Wallis-H tests were used in the comparison of the scores. RESULTS: The ideal profile was the most preferred in both sexes, whereas the least preferred was a severe Class III malocclusion with a reduced vertical dimension of 8 mm. In general, esthetics decreased as it moved away from the ideal profile in a sagittal or vertical direction. CONCLUSIONS: Some factors from among those sampled (sex, age, education, social status, geographic region, and personal profile) affected esthetic preference, whereas others did not.

Estética Dental , Maloclusión de Angle Clase III , Cara/diagnóstico por imagen , Femenino , Humanos , Masculino , Dimensión Vertical
Av. odontoestomatol ; 36(3): 152-159, sept.-dic. 2020. ilus, graf, tab
Artículo en Español | IBECS | ID: ibc-197414


INTRODUCCIÓN: La correcta determinación de la Dimensión Vertical (DV) es esencial al momento de rehabilitar a un paciente. En la literatura existen escasas investigaciones que relacionen en conjunto la DV con otras variables como actividad electromiográfica.El objetivo de este estudio es describir una técnica para el análisis de la DVa través del Espacio Libre de Inoclusión (ELI), mediante la utilización de articulografíaelectromagnética y electromiografía de superficie. MATERIAL Y MÉTODOS: Se registró la DV mediante el uso de un articulógrafo electromagnético AG501 simultáneamente con la actividad electromiográfica de músculos masetero y temporal mediante la utilización de electromiógrafo de superficie EMG VIII, según protocolo de DVO y DVP.El estudio se realizó en el Laboratorio de Fisiología Oral del Centro de Investigación en Ciencias Odontológicas (CICO) con la Aprobación del Comité Ético Científico de la Universidad de La Frontera. RESULTADOS: Se obtuvo un protocolo para el uso de electromiografía y articulografía electromagnética 3D en el análisis de dimensión vertical, el cual permite caracterizar la dimensión vertical mediante una medición de distanciavertical, medición de distancia 3D, ángulo de apertura y la actividad eléctrica de los músculos elevadores de la mandíbula a distintos grados de apertura

INTRODUCTION: The correct determination of the Vertical Dimension (VD) is essential when rehabilitating a patient. There is little research in the literature that collectively relates the VD to other variables such as electromyographic activity. The objective of this study is to describe a technique for the analysis of the VD through the Interocclusal Distance, using electromagnetic articulography and surface electromyography. MATERIAL AND METHODS: The VD was recorded by using an AG501 electromagnetic articulgraph simultaneously with the electromyographic activity of masseter and temporal muscles using EMG VIII surface electromyograph, according to DVO and DVP protocol. The study was carried out in the Oral Physiology Laboratory of the Center for Research in Dental Sciences (CICO) with the approval of the Scientific Ethical Committee of the University of La Frontera. RESULTS: A protocol was obtained for the use of electromyography and 3D electromagnetic articulography in the vertical dimension analysis, which allows the vertical dimension to be characterized by a vertical distance measurement, 3D distance measurement, opening angle and the electrical activity of the lifting muscles of the jaw to different degrees of opening

Humanos , Electromiografía/métodos , Dimensión Vertical , Radiación Electromagnética , Mandíbula/diagnóstico por imagen , Protocolos Clínicos
Orthod Fr ; 91(4): 347-360, 2020 Dec 01.
Artículo en Francés | MEDLINE | ID: mdl-33319769


According to several theories, the oro-facial sphere would be interconnected with the rest of the body justifying the requests for care to improve a body zone at a distance. The aim of this literature review was to look for potential distant links of dysmorphoses of the three dimensions of space according to the etiopathogenic theories and the data of science. We carried out a keyword search leading to 58 references. In the transverse dimension, the transverse maxillary hypoplasia and dissymmetry of the molar class of the transverse dimension would not induce a change in the distribution of the weight of the body on a stabilometric platform. In the vertical dimension, hyperdivergent patients have a decreased bite force, cephalic extension with respect to the spine, an extension of the base of the skull, and decreased cervical lordosis. In the anteroposterior dimension, skeletal classes II would be associated with increased cervical lordosis and posterior cephalic extension according to the « true vertical ¼ (inversely for classes III). The prevalence of dental classes II would be increased in scoliosis subjects. Studies with a low level of evidence (grade III, IV or even V) should be interpreted with caution because the simultaneous presence of concomitant anomalies does not allow us to conclude that there is a cause-and-effect relationship.

Lordosis , Escoliosis , Cefalometría , Humanos , Maxilar , Postura , Dimensión Vertical
Rev. cuba. estomatol ; 57(4): e2989, Oct.-Dec. 2020. tab, graf
Artículo en Español | LILACS, CUMED | ID: biblio-1144449


Resumen Introducción: La dimensión vertical oclusal en algunos casos se altera y para predecirla se suelen utilizar métodos, tanto subjetivos como objetivos y entre los que se encuentran los antropométricos. Objetivo: Evaluar la correlación entre la longitud lineal del pabellón auricular y la dimensión vertical en jóvenes dentados. Métodos: Se evaluaron 47 estudiantes a nivel de la longitud vertical del pabellón auricular (punto más superior al punto más inferior del lóbulo de la oreja), medición del canto exterior del agujero ocular al tragus y la dimensión vertical oclusal (situados en el punto subnasal y en el borde más prominente del mentón). Todas las mediciones se hicieron con un calibrador digital. Resultados: La dimensión vertical oclusal promedio fue de 65,68 ± 4,14 mm. La distancia promedio entre el canto externo del ojo al tragus derecho fue de 67 ± 3,52mm (correlación de r = 0,776; p < 0,01) mientras que en el lado izquierdo fue de 66,95 ± 3,98 mm (correlación de r = 0,733; p < 0,01). La distancia de la longitud del pabellón auricular en el lado derecho fue de 64,74 ± 4,47mm (correlación de r = 0,643; p < 0,01) mientras que en el lado izquierdo fue de 64,84 ± 4,46 mm (correlación de r = 0,657; p < 0,01). Conclusiones: Las medidas antropométricas de la longitud lineal del pabellón auricular derecho e izquierdo se correlacionó con la dimensión vertical oclusal así como la medición entre el canto externo del ojo al tragus también se correlación con la dimensión vertical oclusal(AU)

ABSTRACT Introduction: When occlusal vertical dimension becomes altered, as is sometimes the case, use should be made of subjective and objective methods, including those based on an anthropometric approach. Objective: Evaluate the correlation between linear ear length and vertical dimension in dentate young subjects. Methods: A total 47 students were evaluated for linear vertical ear length (from the highest to the lowest end of the earlobe), and measurements were taken from the outer edge of the ocular hole to the tragus and the vertical occlusal dimension (located at the subnasal point and the most prominent edge of the chin). All measurements were taken with a digital caliper. Results: Average vertical occlusal dimension was 65.68 ± 4.14 mm. Average distance from the outer edge of the eye to the right tragus was 67 ± 3.52 mm (r correlation = 0.776; p < 0.01), whereas on the left side it was 66.95 ± 3.98 mm (r correlation = 0.733; p < 0.01). Ear length distance was 64.74 ± 4.47 mm on the right side (r correlation = 0.643; p < 0.01) and 64.84 ± 4.46 mm on the left side (r correlation = 0.657; p < 0.01). Conclusions: Right and left linear ear length anthropometric measurements correlated with vertical occlusal dimension. The distance from the outer edge of the eye to the tragus also correlated with the vertical occlusal dimension(AU)

Humanos , Dimensión Vertical , Antropometría/métodos , Pabellón Auricular
Rev. ADM ; 77(5): 261-266, sept.-oct. 2020. ilus
Artículo en Español | LILACS | ID: biblio-1147137


Una de las consecuencias de la desprogramación neuromuscular es la rotación mandibular en sentido horario, evidenciando el punto prematuro de contacto y aumentando la dimensión vertical del paciente. En pacientes clase II con componente vertical, es un problema realizar este tipo de tratamiento, ya que por lo general este efecto de posterorrotación mandibular hace el perfil más convexo, y en algunos casos genera mordida abierta anterior, la cual se debe corregir posteriormente con el tratamiento de ortodoncia, cirugía o prótesis, lo que alarga el tiempo total de tratamiento por la necesidad de control vertical. El presente caso se trata de una mujer de 45 años de edad, dolicofacial, con tendencia a mordida abierta, mordida dual, sobremordida vertical y horizontal disminuidas, motivo de consulta dolor articular, el cual no le permite continuar con sus labores diarias, el tratamiento realizado fue desprogramación neuromuscular con un guarda oclusal inferior con el propósito de aliviar sintomatología articular y control vertical con microtornillos palatinos previo a tratamiento ortodóncico (AU)

One of the effects of the neuromuscular deprogramming treatment is the mandibular clockwise rotation, making the light premature occlusal contact more evident and increasing the patient vertical dimension. In Class II patients with vertical component is difficult to treat them due to profile worsening as an effect of the clockwise rotation creating in some patient's anterior open bite, this has to be corrected later in treatment with orthodontic intrusion, surgery or prosthodontic treatment, increasing the total time of treatment with the vertical control necessity. This case report is a 45 years old patient, dolichofacial, with anterior open bite tendency, dual bite, decreased overjet and overbite, her chief complaint was temporomandibular joint dysfunction which dont allow her to do her daily duties, the treatment for her was neuromuscular deprogramming splint for the temporomandibular joint pain, and vertical control with temporary anchorage devices (miniscrews) before the orthodontic treatment (AU)

Humanos , Persona de Mediana Edad , Dimensión Vertical , Síndrome de la Disfunción de Articulación Temporomandibular/terapia , Implantes Dentales , Mordida Abierta/terapia , Rotación , Ferulas Oclusales , Manifestaciones Neuromusculares , Sobremordida/terapia , Mandíbula/fisiología , México
Chin J Dent Res ; 23(3): 215-220, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32974622


The main goal of this report was to solve a clinical case of a 73-year-old man with diabetes, partial edentulism and a pathological occlusion with biocorrosion using conservative and adhesive techniques. A complete rehabilitative treatment was performed, increasing the vertical dimension of occlusion using indirect restorations with composite resins on teeth and resin crowns on implants and returning function using mutually protected occlusion. A 6-month posttreatment clinical and radiographic follow-up was performed.

Fracaso de la Restauración Dental , Estética Dental , Anciano , Resinas Compuestas , Coronas , Diseño de Prótesis Dental , Humanos , Masculino , Dimensión Vertical
Cient. dent. (Ed. impr.) ; 17(2): 139-146, mayo-ago. 2020. tab
Artículo en Español | IBECS | ID: ibc-195102


Hablamos de sonrisa gingival cuando se altera la armonía establecida entre los dientes, labios y encía, exponiendo más allá de 2 mm de encía coronal a los incisivos maxilares, una circunstancia que, en ocasiones, genera un problema estético para algunos pacientes. La etiopatogenia de dicha condición se resume en tres facetas: dentoperiodontal (erupción pasiva alterada y erupción activa alterada), ósea (esquelética y/o dentoalveolar) y muscular (labio superior corto e hipermovilidad labial).Una condición multifactorial como la sonrisa gingival precisa un abordaje multidisciplinar: cirugía plástica periodontal, ortodoncia, cirugía ortognática, reposición labial, infiltración de toxina botulínica y tratamiento estético complementario

The excessive gingival display when a patient smiles (from 2 mm or more) is known as gummy smile. When the harmony established between the teeth, lips and gum is altered, exhibiting short clinical crown of the maxillary anterior teeth, in occasions generates an aesthetic problem for some patients.There are different etiologies of gummy smile, it concludes in three facets: dentoperiodontal (Altered Passive Eruption and Altered Active Eruption), bone defect (excessive vertical bone growth, dentoalveolar extrution) and muscular (short upper lip and upper lip hyperactivity), and the combination of some of these factors.A multifactorial condition requires a multidisciplinary boarding: plastic periodontal surgery, orthodontic, orthognathic surgery, lip reduction, infiltration of Botulinum toxin and complementary aesthetic treatment

Humanos , Técnicas Cosméticas , Sonrisa/fisiología , Músculos Faciales/anatomía & histología , Músculos Faciales/fisiología , Dimensión Vertical , Sobrecrecimiento Gingival/cirugía , Ortodoncia/métodos , Ortodoncia Correctiva/métodos , Periodoncia , Cirugía Ortognática
Int J Prosthodont ; 33(4): 380-385, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32639697


PURPOSE: To test the accuracies of different methods of digital vertical dimension augmentation (VDA) by comparison with a clinical situation. MATERIALS AND METHODS: Bite registrations with approximately 5 mm of VDA were made in the incisor regions of 10 subjects (mean VDA 4.5 mm). The conventional maxillary and mandibular stone casts in maximum intercuspation (MICP) and VDA bite registrations were digitized for all subjects using a laboratory scanner (control group). Lateral portraits were taken of all subjects to locate the position of the condylar axis. Four different digital VDA methods were compared to the control group: 100% rotation of the mandible referring to the lateral picture (100RL); 85% rotation and 15% translation referring to the lateral picture (85R15TL); 100% rotation in normal mounting mode of the Trios virtual articulator (100R); and jaw-motion analysis (JMA) equipment. The amount of VDA for each experimental group was compared to the control group. The augmented distances between the central incisors and the second molars were measured using 3D analyzing software. The ratio of the augmented distances between the posterior and anterior regions (P/A ratio) was calculated. One-way analysis of variance and multiple comparisons via least significant difference test were carried out to determine statistical significance. RESULTS: The P/A ratio of each group was as follows: Control = 0.61; 100RL = 0.55; 85R15TL = 0.61; 100R = 0.53; JMA = 0.52. Significant differences were observed for control vs JMA and for 85R15TL vs JMA (P < .05). The addition of translational movement was the primary factor for increasing the accuracy of digital VDA, with the lateral picture being a secondary factor. CONCLUSION: VDA using a virtual articulator with 100% rotation induces an error when compared to the clinical situation. When a clinician performs digital VDA, the setting of 85% rotation and 15% translation produces results closer to the real clinical condition.

Articuladores Dentales , Modelos Dentales , Registro de la Relación Maxilomandibular , Mandíbula , Proyectos Piloto , Dimensión Vertical
Am J Orthod Dentofacial Orthop ; 157(6): 773-782, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32487307


INTRODUCTION: Patients seeking orthodontic treatment often have esthetic concerns (ie, they want a better smile). Patients with increased vertical facial dimensions have different smile traits than other patients. This study aimed to compare the smile characteristics of subjects with different vertical facial dimensions and to use stereophotogrammetry to evaluate the changes in facial animation upon smiling. METHODS: One hundred twenty adolescents and young adults (aged 15-25 years) who were referred for orthodontic treatment were divided into 2 groups according to their vertical facial height: increased (n = 30) and normal (n = 30). Three-dimensional stereophotogrammetric images were obtained from the patients during rest and smile. The images were superimposed, and the displacements of specific landmarks were recorded. Linear, angular, and proportional measurements were recorded on the smile and rest images. RESULTS: When smiling, horizontal movement of commissures was less (right, P = 0.038; left, P = 0.009), upper lip elevation was higher (P = 0.014), and the upper lip was shorter (P = 0.014) in the vertical group than in the normal group. In the vertical group, the interlabial gap was increased both at rest and when smiling (P <0.001). Statistically significant differences were found in smile index (P = 0.001), nasolabial fold displacement (P = 0.018), and lip angles (both P = 0.001) between groups. CONCLUSIONS: Group and sex differences were observed when smiling. Careful consideration of these differences will help clinicians in proper diagnosis and treatment planning.

Estética Dental , Sonrisa , Adolescente , Adulto , Cara , Femenino , Humanos , Labio , Masculino , Fotogrametría , Dimensión Vertical , Adulto Joven
Rev. Ateneo Argent. Odontol ; 62(1): 13-23, jun. 2020. graf
Artículo en Español | LILACS | ID: biblio-1148125


El presente es un trabajo de investigación bibliográfica que busca establecer la posibilidad de utilizar las cefalometrías como elementos de diagnóstico pronóstico y elaboración de prótesis. Centra su objeto de estudio en encontrar y clasificar los factores morfológicos y funcionales que varían con los biotipos craneofaciales y que son de interés en la prostodoncia. La metodología empleada fue la revisión de la literatura histórica hasta la actualidad en la que se relacionan temas de prostodoncia a los biotipos craneofaciales. Si bien solo dos autores relacionaron la prostodoncia con los biotipos cráneo faciales, sí se encontraron varios temas de interés asociados directamente a la prostodoncia. Se clasificaron en temas de oclusión: Curva de Spee, plano de oclusión, movimientos mandibulares, dimensión vertical oclusiva y de especio libre interoclusal. Tema de maloclusiones. Tema de fuerza muscular. Tema variaciones morfológicas de procesos alveolares, corticales ósea y de la forma dentaría. Encontrándose para cada uno de ellos alguna correlación positiva con los distintos tipos faciales. De este estudio, se concluye que es necesario sistematizar el estudio de los conocimientos que puede aportar la cefalometría como una importante herramienta de diagnóstico al prostodoncista a partir de haberse encontrado variaciones muy importantes en los aspectos mencionados que hacen al interés de la rehabilitación prostodóncica (AU)

This Work is a bibliographic research that seeks to establish the use of cephalometries as elements of diagnosis prognostic and prosthesis elaboration. Its focus is to find and classify morphological and functional factors that vary with facial types which are of interest in prosthodontics. This was a review of the historical literature to date, in which prosthodontics are related to facial types. Although only two authors related prosthodontics to facial ypes, they did find several topics of interest directly associated with prosthodontics. They were classified into occlusion themes: Spee curve, occlusion plane, mandibular movements, occlusive vertical dimension and interocclusal free space. Malocclusion issue. Muscle strength theme. Morphological variations of alveolar processes, cortical bone and dental morphology. They found some positive correlation with the different facial types for each of them. From this study, it is concluded that it is necessary to systematize the study of cephalometries because they can provide to be an important diagnostic tool to the prosthodontist because there were found very important variations in the mentioned aspects that are of interest in prosthodontic rehabilitation (AU)

Humanos , Fuerza de la Mordida , Biotipología , Prótesis Dental , Oclusión Dental , Maloclusión , Dimensión Vertical , Implantes Dentales , Cefalometría , Rehabilitación Bucal
Indian J Dent Res ; 31(2): 263-276, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436908


Aim: (1) To apply the quadrilateral analysis to adult male and female Chennai population with normal occlusion, (2) To compare the results to Chennai adult male and female with anterior openbite, (3) To evaluate the correlation of the quadrilateral variables and (4) To establish additional parameters to determine an openbite tendency. Materials and Methods: The study was carried out from the values taken from 120 pretreatment lateral cephalograms of the selected Chennai population and divided into two groups. Group A consists of 60 lateral cephalograms of 30 male and 30 female patients with balanced anteroposterior and vertical facial proportion and normal overjet and overbite relationship. Group B consists of 60 lateral cephalograms of 30 male and 30 female patients with anterior openbite and comparision done with 2 groups. Results in normal subjects the lower facial heights are equal. In anterior openbite subjects. The facial heights. The sagittal angle. The maxillary and mandibular sagittal ratios. Lower facial height and sagittal ratio is larger than normal. Results: statistical analysis performed with Version 23(SPSS) and Student's t test were done to describe the mean and standard deviation. To assess the relationship pearson correlation was used.The probability value of 0.05 is consdered as significant. Conclusion: The malformation of the craniofacial structure in anterior openbite subjects resides in the maxillomandibular complex. The overbite depth indicator, the sagittal angle, the maxillary, and mandibular sagittal ratio can be additional parameters in determining an openbite tendency.

Maloclusión , Mordida Abierta , Adulto , Cefalometría , Femenino , Humanos , India , Masculino , Mandíbula , Dimensión Vertical
Int J Oral Maxillofac Implants ; 35(3): 461-478, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32406642


PURPOSE: The aim of this study was to investigate the effect of implant and surgical characteristics on the mucosal vertical dimension components. Mucosal vertical dimension consists of the sulcular epithelium and the supracrestal tissue attachment, which can be clinically measured from the gingival margin to the bone-to-implant contact. Connective tissue attachment is measured from the apical border of attached epithelium to the first bone-to-implant contact, while epithelial vertical dimension is measured from the mucosal margin to the apical border of attached epithelium. MATERIALS AND METHODS: An electronic and manual search for relevant articles published from January 1980 to May 2019 was performed. Animal studies of ≥ 10 implants followed by histometric analysis were included. Quality assessment was performed using the ARRIVE guidelines, and risk of bias assessment was performed using SYRCLE guidelines. Subgroup meta-analysis was performed to analyze the influence of different surgical approaches and implant design. RESULTS: A total of 38 articles were included. The mean value and corresponding standard error of mucosal vertical dimension, supracrestal tissue attachment, connective tissue attachment, and epithelial vertical dimension were 3.39 ± 0.07 mm, 2.9 ± 0.12 mm, 1.35 ± 0.04 mm, and 2.0 ± 0.06 mm, respectively. Supracrestal and subcrestal bone-level implants had significantly higher mucosal vertical dimension than equicrestal bone-level implants. Platform-switching implants demonstrated significantly lower mucosal vertical dimension compared with non-platform-switching implants. CONCLUSION: Within its limitations, this review showed that equicrestal implants had a smaller mucosal vertical dimension than subcrestal and supracrestal implants, and platform-switching implants possessed a smaller mucosal vertical dimension.

Pérdida de Hueso Alveolar , Implantes Dentales , Animales , Tejido Conectivo , Implantación Dental Endoósea , Diseño de Prótesis Dental , Dimensión Vertical
Compend Contin Educ Dent ; 41(5): 284-289, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32369386


As conservative dentistry has progressed in recent years, new developments in bonding protocols have enabled clinicians to predictably utilize restorative material on any surface of the tooth to achieve treatment goals. One such advancement is the bonding of composite and indirect restorations to the occlusal surfaces of posterior teeth to modify the occlusal vertical dimension (OVD). In this case presentation involving a patient with a constricted chewing pattern (CCP) who did not want orthodontic therapy, conservative treatment focused on increasing the patient's OVD using a combination of direct and indirect restorations in an attempt to alleviate the CCP. This minimally invasive additive approach addressed the esthetics in the case while limiting functional and biomechanical risks.

Desgaste de los Dientes , Diente , Restauración Dental Permanente , Estética Dental , Humanos , Dimensión Vertical
Beijing Da Xue Xue Bao Yi Xue Ban ; 52(2): 368-372, 2020 Apr 18.
Artículo en Chino | MEDLINE | ID: mdl-32306024


OBJECTIVE: To measure the dimensional data of complete dentures and to design a novel tray for recording maxillomandibular relationship of edentulous patients. METHODS: For the measurement, 100 pairs of complete dentures from the clinic were surveyed for the following parameters: a1, the distance between the middle fossa of the upper left and right first molars; a2, the anterior-posterior distance between the middle fossa of the upper first molars and the incisal edge; a3, the width of the upper denture; a4, the anterior-posterior length of the upper denture; a51, the height from the mesio-lingual cusp of the right upper first molar to the saddle surface; a52, the height from the central fossa of the right lower first molar to the saddle surface; a6, the height from the notch of the upper lip frenulum to the upper central incisor edge; a7, the least thickness of the labial saddle base in the upper central incisor region. Based on the data, the trays with different sizes were designed and fabricated, and the key parameters were: b1, the distance between the foramina of screw posts, b2, the anterior-posterior distance between the foramina of the screw posts and the incisal edge; b3, the width of the tray; b4, the anterior-posterior length of the tray; b51, the height of the posterior platform with the screw nut; b52, the height of the screw post; b6, the height of the anterior tray handle; b7, the thickness of the anterior tray handle. RESULTS: The minimum, average and maximum data for each parameter were (in millimeter): a1: 37.1, 44.5, and 59.6; a2: 22.6, 29.0, and 38.1; a3: 48.5, 58.2, and 76.6; a4: 37.4, 50.8, and 61.0; a51: 5.6, 9.5, and 14.7; a52: 3.8, 9.9, and 18.8; a6: 8.9, 16.6, and 24.7; a7: 1.2, 2.8, and 5.9. Based on the data, the trays in small, medium and large sizes were designed and fabricated. In clinical application, the putty silicone rubber impression material was used to reline the tray, meanwhile the posterior platform and anterior tray handle were set as the occlusal plane, then the screw posts were added and adjusted till the proper vertical dimension, after that, the putty silicone rubber impression material was added around the screw posts to record the horizontal maxillomandibular relationship, finally, the anterior surface of the tray handle was used to record the midline of the face and lower edge of the upper lip at rest and with smile. CONCLUSION: The dimensional data offered reference for the analysis of restoration space in edentulous patients. The tray designed and fabricated in this study may serve as a new tool for recording the maxillomandibular relationship.

Dentadura Completa , Boca Edéntula , Técnica de Impresión Dental , Humanos , Incisivo , Labio , Dimensión Vertical
Oper Dent ; 45(5): 457b-466, 2020 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-32243251


CLINICAL RELEVANCE: This article presents the dental restoration of a young female patient complaining of erosive dental wear using a three-step restorative technique, an alternative approach with some novel adjustments. SUMMARY: For successful tooth wear treatment, determining the etiological systemic and local factors is the main priority before deciding on effective and long-term preventive and/or therapeutic restorative approaches. In addition to professional intervention, achieving optimal outcomes requires patients to control their diet and/or gastric issues, thus minimizing the wear process. However, continuous wear constitutes the most challenging scenario, mainly when it affects young patients' dentitions. This article describes the dental restoration of posterior teeth with reestablishment of occlusal vertical dimension before treating the anterior teeth, while educating the patient and providing medical monitoring. The three-step restorative technique seems to be properly applicable in cases of significant dental compromise due mainly to erosive wear and is based on direct procedures, which can assure a reliable and feasible approach.

Desgaste de los Dientes , Restauración Dental Permanente , Dieta , Femenino , Humanos , Desgaste de los Dientes/terapia , Dimensión Vertical