Determination Of Occlusal Vertical Dimension Research Articles

Increasing Vertical Dimension of a Case with Full Mouth Rehabilitation: Case Report.

Introduction: Bruxism is one of the most frequent causes for occlusal tooth wear, with the loss of tooth structure caused by mechanical wear between maxillary and mandibular tooth surfaces, case report was conducted to improve the patient oral health, and to maintain the new vertical dimension since it was lost by teeth clenching. Case description: this paper presents a 50 years old male suffering from severe bruxism, which implicated the appearance and function of the patient, he was transferred to TIU dental hospital for full mouth rehabilitation treatment. Discussion: The rehabilitation of patients with extensive occlusal wear is complex and difficult to solve, becoming thus one of the biggest challenges of dentistry, a proper planning of a prosthetic rehabilitation should not attribute the re-establishing of occlusal vertical dimension (OVD) to new prostheses at the risk of the patient doesn’t adapt to a new condition of vertical dimension. Conclusion: Tooth wear causes dimensional changes in facial morphology and OVD decrease. The correct determination of occlusal vertical dimension represents a factor of success in the rehabilitation treatment. Keywords: Vertical Dimension, Rehabilitation, Full Mouth, Bruxism.

Role of Mucobuccal Sulci in Determination of Occlusal Vertical Dimension in Dentate Subjects.

Aim: To find out the distance between the mucobuccal sulci of maxillary and mandibular arches and the cusp tips of posterior teeth and evaluate the occlusal vertical dimension in dentate subjects. Study Design:Cross sectional observational study. Place and duration: Prosthodontic department of Lahore Medical and Dental College, Lahore, from 2nd September 2022 till 2nd December 2022. Methodology: A total of 45 dentate subjects including 20 males and 25 females were selected. Alginate impressions (irreversible hydrocolloid) of both arches were taken in stock trays. Impressions were poured in hard plaster and stone casts were fabricated. Digital vernier caliper with accuracy of 0.01mm was used for recording the distance from the depth of mucobuccal sulci of both arches to the cusp tips of all posterior teeth of the respective arches. The distance from maxillary mucobuccal sulcus to the mandibular mucobuccal sulcus in maximum intercuspation was also calculated. Result: The distances measured from the maxillary mucobuccal sulcus to the buccal cusp tips of maxillary first premolar, second premolar and first molar were found to be 16.86mm; 15.94mm, and 15.45mmrespectively. The distances measured from the mandibular mucobuccal sulcus to the buccal cusp tips of mandibular first premolar, second premolar and first molar were 17.02mm, 15.14mm and 14.26mmrespectively. The mean distance recorded from the depth of maxillary and mandibular sulci in maximum intercuspation positions showed shortest distance at first molar areai.e.; 26.88mmas compared to the distance found in first premolar 35.22mm and second premolar 35.63mmareas. Conclusion: The mean distances recordedbetween maxillary and mandibular sulci in intercuspation position were 35.22mm, 35.63mm and 26.88mm respectively. These values may be helpful in determination of occlusal vertical dimension by selecting appropriate teeth and shaping occlusal rims while fabricating complete dentures Keywords: Dentate, Dental arch, Mucobuccal sulcus, Maxilla, Mandible, Occlusal vertical dimension, Posterior teeth.

Anthropometric Measurements for Determination of Occlusal Vertical Dimension in Relation to Eye

Objective: To determine the mean vertical dimension of occlusion among dentate population by using different anthropometric measurements in relation to eye. Study Design and Setting: It was a cross sectional study conducted at outpatient department of prosthodontics, Liaquat University of Medical and Health Sciences, Jamshoro from March –Sep-2019. Methodology: Five eye characteristics were measured. The distance between the outer canthus of one eye and the inner canthus of the opposite eye is measured in millimeters, outer canthus to rima oris distance, interpupillary distance, mid pupil to rima oris distance and canthus to tragus distance. Data were analyzed using SPSS Version 20. Mean and SD for age distinction between right and left pupil, rima oris and tragus. The outcome was assessed using age and gender stratification. The age and gender groups were compared using a t -test. Results: Total n=100 patients with complete dentitition were included for data collection. Mean age was 22.75±1.86 years. Mean vertical dimension of occlusion (OVD) among dentate population was 67.73±1.02 mm. The mean inter canthus distance was 63.13±2.95mm, the mean interpupillary distance was 61.21±1.67mm, rima oris to pupil was 67.46±1.53mm and eye to ear distance was 70.04±1.68mm Conclusion: The OVD index identifies the precise vertical dimensions as being present in dentate populations. This index could be used in clinical setting before using other methods to estimate vertical dimension to provide a general sense of the patient's vertical dimension.

Accuracy between Functional Swallowing and Knebelman Craniometric Method to Measure Occlusal Vertical Dimension in Total Denture Wearers: A Quasi-experimental Study.

ABSTRACTObjective:The objective was to determine the accuracy between functional swallowing (FS) and the Knebelman craniometric method (KCM) to measure occlusal vertical dimension (OVD) in total denture wearers.Materials and Methods:A quasi-experimental, prospective study was conducted considering the KCM diagnostic method as the gold standard compared to FS. All the totally edentulous patients attended at the School of Dentistry of the Universidad Nacional Mayor de San Marcos (n = 32) in 2018–2019 were evaluated. Previous informed consent was obtained from all patients. A Knebelman’s Craniometer was used to obtain longitudinal measurements measured in millimeters. The measurement was made with the Knebelman Craniometer by placing the tip into the external auditory canal inside the right meatus. On the other hand, for the FS method, the patients were seated comfortably with their back supported and their head in a natural position. Both upper and lower rollers were inserted into the mouth and the patient was instructed to swallow saliva for a period of 5min.Results:When comparing the measurement of the OVD of KCM versus FS according to sex, men presented an OVD of 68.1 ± 3.9 mm, being 64.1 ± 3.8 mm in women. Accuracy was evaluated with an analysis of concordance between FS and the KCM in the determination of OVD in totally edentulous patients with a value of 0.97 (confidence interval = 0.31–0.99) (P = 0.013).Conclusions:There is a good concordance between the FS method and the KCM at the time of determining the OVD of edentulous patients using total prostheses.

Highly producible method for determination of occlusal vertical dimension: relationship between measurement of lip contact position with the closed mouth and area of upper prolabium

PurposeA new method inducing the physiologic rest position of the mandible using the lip contact position with the closed mouth have compared with those obtained using conventional methods of placing the mandible in the physiologic rest position. MethodsThe lip contact position with the closed mouth as a method was investigated whether the technique was useful for determining the occlusal vertical dimension. The relationship between the space between the maxillary and mandibular front teeth in the lip contact position with the closed mouth and the areas of the prolabia was also investigated. ResultsMedian space between the maxillary and mandibular front teeth in the lip contact position with the closed mouth was 1.53mm, a value intermediate between the value of 2.16mm in the resting mandibular position obtained by the conventional technique and that of 1.33mm in the swallowing position. The coefficient of variation of the space in the lip contact position with the closed mouth was significantly lower than those in the resting mandibular position and in the swallowing position. A significant positive correlation was recognized between the space in the lip contact position with the closed mouth and the area of the prolabium of the upper lip. ConclusionsThese results clarified that the lip contact position with the closed mouth obtained the excellent reproducibility comparing to the conventional methods. These findings suggested that the area of the prolabium of the upper lip might offer an effective index for individual determination of the correct free-way space.

Occlusal Vertical Dimension and its Correlation with Lingual Frenum

This study was used to evaluate the use of lingual frenum as pre – extraction record in determination of occlusal vertical dimension in edentulous patients.The sample consisted of twenty subjects, impression of lower arch, stock trays, stone, surveyor and vernia for measurements.The results of this study indicate that the distance between anterior attachment of lingual frenum and incisal edges of mandibular central incisors may be used as a reliable landmark when the frenum was recorded during function.The lingual frenum of the mandible is used as are liable land mark to determine the occlusal vertical dimension

Prótese Parcial Removível Provisória Tipo Overlay na Reabilitação Oral de Paciente com Colapso Oclusal Posterior

Introduction: Several studies have shown that in clinical cases in which there is a decrease in the Occlusal Vertical Dimension (OVD) and imbalance of the stomatognathic system, oral rehabilitation can be performed with the use of Removable Partial Dentures (RPD) with occlusal coverage (overlay type), associated or not with restorations, in order to reestablish the OVD and occlusal plane and to eliminate occlusion alterations, thus functioning as a guide to final rehabilitation. Clinical case report: This article describes the use of provisional overlay RPD in oral rehabilitation of a female patient, 56 years old, with posterior occlusal collapse and excessive tooth wear. This approach was adopted in order to prepare the oral environment and restore the OVD prior to rehabilitation with final prostheses. The sequence of treatment involved clinical and radiographic examination procedures, tooth casting, aesthetic and functional reestablishment of occlusal planes through the determination of OVD and Centric Relation (CR), cast-mounting in semi-adjustable articulator, prosthesis try-in and insertion, and follow-up. Conclusions: The installation of provisional overlay RPD contributed to protection and conditioning of the oral tissues, reestablishment of inter-maxillary relations and improvement of aesthetic, phonetic and masticatory functions. These benefits provided comfort to the patient and individual adaptation to the new configuration of the stomatognathic system. DESCRIPTORS Removable Partial Denture. Overlay Denture. Vertical Dimension.

Reliability of different facial measurements for determination of vertical dimension of occlusion in edentulous using accepted facial dimensions recorded from dentulous subjects.

The study was undertaken to evaluate the reliability of different facial measurements for determination of vertical dimension of occlusion in edentulous subjects using accepted facial dimensions recorded from dentulous subjects. The hypothesis was that facial measurements can be used to obtain the vertical dimension of occlusion for edentulous patients where no pre-extraction records exist. A total of 180 subjects were selected in the age groups of 50-60years, consisting of 75 dentate male and 75 dentate female subjects for whom different facial measurements were recorded including vertical dimension of occlusion and rest, and 15 edentulous male and 15 edentulous female subjects for whom all the facial measurements were recorded including the vertical dimension of rest and occlusion following construction of upper and lower complete dentures. The left outer canthus of eye to angle of mouth distance and the right Ear-Eye distance were found to be as valuable adjuncts in the determination of occlusal vertical dimension. The Glabella-Subnasion distance, the Pupil-Stomion distance, the Pupil-Rima Oris distance and the distance between the two Angles of the Mouth did not have a significant role in the determination of the occlusal vertical dimension. The vertical dimension can be determined with reasonable accuracy by utilizing other facial measurements for patients for whom no pre-extraction records exist.

Clinical rest and closest speech positions in the determination of occlusal vertical dimension.

Two subject groups had their mandibular positions determined, using an electrognathograph, at the clinical rest position (CRP) and at the closest speaking position (CSP). They were classified into a toothwear (largely of attritional origin) group (n=30) and a non-toothwear, or normal, group (n=60). The mean CRP deduced for the groups was similar in all three dimensions and found to be just less than 2 mm open from and 0.6 mm posterior to intercuspal position (IP) and approximately in the midline. The CSP, in two dimensions, of the toothwear group was significantly closer to IP than that of the normal group. The vertical component of CRP and CSP was similar for the normal group but CSP was significantly reduced in comparison to CRP for the toothwear group. The most forward component of CSP was significantly more anteriorly placed than was that of CRP. Although there was a pronounced inter-individual variation the results suggest toothwear, of long acting aetiology, has less affect on CRP than on CSP.

Determination of occlusal vertical dimension by means of controlled pressure against tissues supporting a complete denture

In order to establish the vertical dimension (VD) of a complete denture prosthesis, a new method of determining a comfortable mandibular position was tested using a recently designed hydraulic jack (hydraulic vertical displacement meter) in five edentulous patients. The device was designed so as to vary occlusal height by means of an extraoral jig connected to intra-oral hydraulic jacks, and to distribute the bite pressure applied against the denture-supporting tissue in approximately the same pattern as that produced by a denture with a VD preferred by the patient. The most comfortable mandibular position determined by this method coincided remarkably with the preferred VD of each patient in our study, indicating that the new device may be used to establish VD for complete denture construction.

Utilization of Articulatory Mandibular Movements in Determination of Occlusal Vertical Dimension

Utilization of Articulatory Mandibular Movements in Determination of Occlusal Vertical Dimension

Magnetic determination of occlusal vertical dimension

The determination of the edentulous interridge dimension is at best an inexact process. During the past seven years, the use of 1 mm thick minimagnets has been a simple, rapid, and accurate method of verifying or ascertaining interridge dimension.