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A self-grinding occlusal plane template to help modify an uneven occlusal plane before providing definitive restorations

Patil PG, Nimbalkar S

J Prosthet Dent, 2021 Mar;125(3):551-553.
PMID: 32418665 DOI: 10.1016/j.prosdent.2020.03.002
Matched MeSH terms: Dental Occlusion*
Fulltext Analysis of the distance between lingual frenal attachment and mandibular incisal edge position in establishing occlusal plane in three different races

Usman JAM, Kesumo A, Shahari NSSBM

Ann Afr Med, 2022;21(4):439-443.
PMID: 36412348 DOI: 10.4103/aam.aam_174_21

INTRODUCTION: The orientation of the occlusal plane forms the basis for the arrangement of teeth conducive to satisfactory esthetics and function, making it one of the most important clinical procedures in prosthodontic rehabilitation. This study aimed to analyze and compare the vertical distance between the anterior attachment of lingual frenum (AALF) and the incisal edge of mandibular central incisors among three races in Malaysia.
MATERIALS AND METHODS: The sample consisted of 63 dentate subjects (21 Malays, 21 Chinese, and 21 Indians) who were chosen based on the inclusion criteria. Two models were made using irreversible hydrocolloid impressions, and an average of the value was obtained. Lingual frenum was recorded in function. Casts were fabricated with dental stone. AALF was marked and the vertical distance was measured using a caliper.
RESULTS: In Malays, the mean and standard deviation of the vertical distance were 14.2 ± 0.9 mm, with a range of 12.3-16.0 mm; in Chinese were 14.4 ± 0.9 mm, with a range of 12.0-16.9 mm; and in Indians were 15.1 ± 1.0 mm, with a range of 13.0-17.2 mm. The difference among the three races regarding the distance between AALF and the incisal edge of mandibular central incisors was statistically significant (P < 0.05). Among the three races, Malays and Indians have the greatest mean difference.
CONCLUSION: According to the results of the current study, the distance between AALF and the incisal edge of mandibular central incisors might be a proper criterion for the initial adjustment of occlusal rims. The values obtained from three different races were significantly different from one another, hence a different range of values was used to establish occlusal height for different races.

Matched MeSH terms: Dental Occlusion*
Fulltext Occlusion, malocclusion and method of measurements - an overview

Hassan, R., Rahimah, A.K.

Archives of Orofacial Sciences, 2007;2(1):3-9.
MyJurnal

Epidemiological studies of occlusion and malocclusion not only help in orthodontic treatment planning and evaluation of dental health services but also offer a valid research tool for ascertaining the operation of distinct environmental and genetic factors in the aetiology of malocclusion. The objective of this article was to give an overview on occlusion, malocclusion and the various methods on measuring the occlusion. Each index and method of the assessment described was based on the opinion of an individual or a group of individuals. It had been widely agreed that no particular index or method available that are truly inclusive of all occlusal criteria. Therefore, different indices or method had been developed according to different requirements and it may be necessary to use more than one index in order to gather information to suit the objective of the particular study.

Matched MeSH terms: Dental Occlusion
Permanent dentition occlusion in Chinese, Indian and Malay groups in Malaysia

Woon KC, Thong YL, Abdul Kadir R

Aust Orthod J, 1989 Mar;11(1):45-8.
PMID: 2640092

This survey outlines the proportion of the various features of occlusion in the permanent dentition of the three ethnic races, Chinese, Malay and Indian in Malaysia. The mean age of the high school children surveyed was 16.4 years. The Chinese and Malays had almost similar distribution of the different types of occlusion. There was a significantly higher prevalence of Class III occlusion among the Chinese and Malays as compared to the Indians. In addition, an edge to edge incisor relationship seemed to be a norm in the Chinese (54%) and Malays (50%) whilst the overjet of between 2-4 mm and the overbite of between 1/3 to 2/3 was more normal to Indians (50%). A crowded dentition was also a norm for the three races.

Matched MeSH terms: Dental Occlusion*
Primary dentition occlusion in Chinese, Indian and Malay groups in Malaysia

Woon KC

Aust Orthod J, 1988 Mar;10(3):183-5.
PMID: 3166621
Matched MeSH terms: Dental Occlusion*
Overjet, overbite and dental midline shift as predictors of tooth size discrepancy in a Bangladeshi population and a graphical overview of global tooth size ratios

Alam MK, Iida J

Acta Odontol Scand, 2013 Nov;71(6):1520-31.
PMID: 23530813 DOI: 10.3109/00016357.2013.775336

This study aimed to measure and compare tooth size ratios in a Bangladeshi population across the following groups: those with normal occlusion, crowding or spacing; those with normal, increased or decreased overjet; those with normal, increased or decreased overbite; those with or without dental mid-line discrepancy; and those with or without lip competence. It also presents a graphical overview of the anterior and overall ratios from the study and using available global data.

Matched MeSH terms: Dental Occlusion*
Fulltext Preventive orthodontic approach for functional mandibular shift in early mixed dentition: A case report

Sharma DS, Srivastava S, Tandon S

J Oral Biol Craniofac Res, 2018 05 03;9(2):209-214.
PMID: 31211038 DOI: 10.1016/j.jobcr.2018.05.004

The case reported here highlights the importance of examination of functional occlusion along with static occlusion. Any undetected malocclusion during early mixed dentition has potency to alter the growth and function of stomatognathic system. Premature contacts in primary canine region is the most prevalent cause of functional mandibular shift and can lead to TMJ problems for the prevalence of self correction of such malocclusion is very low if not intervened. A case of functional mandibular shift due to faulty canine guidance because of premature contacts is discussed here. Selective grinding of premature contacts and myofunctional exercise resulted in well balanced centric occlusion coinciding with centric relation.

Matched MeSH terms: Dental Occlusion; Dental Occlusion, Centric
Fulltext Comparison of anterior tooth size discrepancies among different malocclusion groups

Asma, A.A.A.

Malaysian Journal of Medicine and Health Sciences, 2013;9(1):73-79.
MyJurnal

Discrepancies between tooth sizes can cause orthodontic problems such as crowding and improper occlusion. By identifying these problems, better orthodontic treatment outcome can be achieved. The aim of this study is to identify anterior tooth size discrepancies among 4 different types of malocclusion i.e. Class I; Class II division 1 (II/1); Class II division 2 (II/2); and Class III. Methods: A retrospective study was carried out using 200 orthodontic study models where 50 study models were taken for each of the 4 malocclusion groups. The samples were selected using random sampling technique based on the orthodontic waiting list in the Orthodontic Department, Dental Faculty, UKM. All anterior teeth were measured by the same examiner at the largest mesio-distal dimension, using a digital caliper recorded up to 0.01 mm. Comparison between the 4 groups of malocclusion were made intra-arch using individual tooth size measurement and inter-arch using Anterior Bolton Index (ABI). Results: For the intra-arch assessment, Class II/1 had significantly the largest upper and lower anterior tooth size except for its upper canine and lower central incisor. Class III group had insignificantly the smallest mandibular anterior teeth compared to other malocclusion groups. For inter-arch assessment, Anterior Bolton Index (ABI) of all samples was 79.2 ± 3.94%. The highest ABI was noted in Class II / 2 of 80.3 ± 4.71%. However, no significant differences were found among the 4 malocclusion groups (p>0.05). Conclusion: Most of the anterior teeth in Class II division 1 were the largest of all. No significant difference in the inter-arch tooth size discrepancies were detected among all malocclusion
groups.

Matched MeSH terms: Dental Occlusion
Fulltext Maxillomandibular relationship record for implant complete mouth rehabilitation with elastomeric material and facial surface index of existing denture

Patil PG, Nimbalkar-Patil S

J Indian Prosthodont Soc, 2015 Oct-Dec;15(4):337-41.
PMID: 26929537 DOI: 10.4103/0972-4052.161568

INTRODUCTION: The maxillomandibular relationship (MMR) record is a critical step to establish the new occlusion in implant supported complete mouth rehabilitation. Using patients existing denture for recording the MMR requires implant definitive cast to be modified extensively to completely seat the denture (with unaltered flanges) on it. This may influence the correct seating of the denture on the implant definitive cast causing faulty recording of the MMR.
MATERIALS AND METHOD: Elastomeric record bases, reinforced with the resin framework, are fabricated and relined with the light body elastomeric material when all the healing abutments are in place. The MMR is recorded with these elastomeric record bases using vacuum formed facial surface index of the occluded existing dentures as a guideline.
RESULTS: The elastomeric record bases with facial surface index of the existing dentures can allow clinicians to record MMR records without removing the healing abutments from the mouth with acceptable accuracy. This can save chair-side time of the procedure. The record of facial surfaces of existing complete denture in the form of vacuum formed sheet helps to set the occlusal vertical dimension.
CONCLUSION: Use of facial surface index together with the elastomeric record bases can be the useful alternative technique to record the MMR in patients with implant supported full mouth rehabilitation. Further study is required to prove its routine clinical utility.
KEYWORDS: Implant restorations; maxillomandibular relation; occlusion rim; record base

Matched MeSH terms: Dental Occlusion
Fulltext The reliability of bitemark evidence: analysis and recommendations in the context of Malaysian criminal justice system

Singh, Shamser, Nambiar, Phrabhakaran

Malaysian Dental Journal, 2008;29(2):119-127.
MyJurnal

Forensic odontological examination of a disputed bitemark can furnish the police and the prosecutor with useful evidence to either implicate or exonerate a person in relation to a crime, on the basis that each person’s bitemark is as distinctive as his or her dentition. The aims of this article are (a) to evaluate the extent of which bitemark evidence is reliable as a proof of identification of a biter for the purposes of criminal investigation and prosecution in Malaysia and (b) to make the necessary recommendations (if any) for the purpose of improving the reliability of such evidence. Where a questioned bitemark is not sufficiently detailed, any findings made from its examination shall be highly unreliable and prejudicial. On the other hand, where a bitemark is sufficiently detailed, then any findings made from its examination may be reliable, provided that the forensic odontologists and other practitioners in the criminal justice system are professionally trained to handle the said bitemark. Therefore, police officers must be given a basic training in the field of forensic odontology so that they will be able to appreciate the evidential value of bitemark and contribute to the development of bitemark cases in Malaysia. The relevant authorities governing the dental practice in Malaysia should standardize the methodology and terminology used in bitemark examination and in the reporting of its findings so that confusion and inconsistency among the forensic odontologists are kept absolutely low. Finally, forensic odontologists must be given specialized training in bitemark examination so that the probative value of their findings can be improved.

Matched MeSH terms: Dental Occlusion
Fulltext Further migration of tooth in patient with reduced periodontium: a case report

Raja Azman Raja Awang, Noor Huda Ismail

Archives of Orofacial Sciences, 2010;5(2):65-68.
MyJurnal

Pathologic tooth migration (PTM) is a common complication following moderate to severe chronic periodontitis, which lead to the undesirable consequences such as traumatic occlusion and impaired aesthetic appearance. Multidisciplinary approach had been successfully used in overcoming the problem. However, since periodontal tissue support is reduced in PTM, further migration of teeth may occur as they were always subjected to the external forces such as occlusion and soft tissue pressure during function. This case report described a 41 year-old male with a further migration of his upper right central incisor after periodontal therapy. After multidisciplinary approach was carried out to overcome the problem and the tooth was on stable condition, permanent splinting was placed to secure the tooth.

Matched MeSH terms: Dental Occlusion
Fulltext Orthodontic management of a case report crowded class iii malocclusion on a class iii skeletal base: a case report.

Wan Hassan, W.N.

Ann Dent, 2010;17(1):40-49.
MyJurnal

A late adolescent patient presented with a Class III malocclusion on a skeletal Class III base, complicated by severe upper arch and moderate lower arch crowding, reverse overjet, anterior and bilateral posterior crossbites with displacement, proclined upper incisors, retroclined lower incisors, distally tipped lower canines and non-coincident centrelines. Treatment was undertaken on an extraction basis by employing the use of an upper removable appliance with Z-springs and posterior bite blocks to correct the anterior crossbite, quad helix and jockey arch for arch expansion, and pre-adjusted edgewise fixed appliance to level and align, space closure and achieve a mutually protective functional occlusion. This paper discussed the rational and evidences behind the treatment employed.

Matched MeSH terms: Dental Occlusion
Reliability and validity of MicroScribe-3DXL system in comparison with radiographic cephalometric system: Angular measurements

Barmou MM, Hussain SF, Abu Hassan MI

Int Orthod, 2018 06;16(2):314-327.
PMID: 29673688 DOI: 10.1016/j.ortho.2018.03.005

AIM: The aim of the study was to assess the reliability and validity of cephalometric variables from MicroScribe-3DXL.
MATERIALS AND METHODS: Seven cephalometric variables (facial angle, ANB, maxillary depth, U1/FH, FMA, IMPA, FMIA) were measured by a dentist in 60 Malay subjects (30 males and 30 females) with class I occlusion and balanced face. Two standard images were taken for each subject with conventional cephalometric radiography and MicroScribe-3DXL. All the images were traced and analysed. SPSS version 2.0 was used for statistical analysis with P-value was set at P<0.05.
RESULTS: The results revealed a significant statistic difference in four measurements (U1/FH, FMA, IMPA, FMIA) with P-value range (0.00 to 0.03). The difference in the measurements was considered clinically acceptable. The overall reliability of MicroScribe-3DXL was 92.7% and its validity was 91.8%.
CONCLUSION: The MicroScribe-3DXL is reliable and valid to most of the cephalometric variables with the advantages of saving time and cost. This is a promising device to assist in diverse areas in dental practice and research.

Matched MeSH terms: Dental Occlusion
Fulltext Cu-sil Denture- A Space Maintainer for Function- In Paediatric Patients

Hiremath S, Jairaj A

J Clin Diagn Res, 2017 Mar;11(3):ZD09-ZD11.
PMID: 28511521 DOI: 10.7860/JCDR/2017/22240.9385

The purpose of this report is to introduce Cu-sil like denture as a functional space maintainer. Here, we report two paediatric cases treated with Cu-sil like denture with multiple edentulous spaces and partially erupted/compromised permanent teeth. Cu-sil like denture not only serves as removable partial functional space maintainer, but also restores the vertical dimension of occlusion, mastication and aesthetics in children. Cu-sil like denture is used in elderly patients who are not willing for extraction of remaining few healthy teeth in the oral cavity. This concept utilizes the remaining natural teeth in the arch, accommodates them within the denture through perforations made in the denture base. The gap between the denture base and the tooth is sealed using a resilient liner. Such denture is used for the paediatric age group in this report for functional rehabilitation temporarily. The report describes the pros and cons of the Cu-sil like denture use in children with technique of preparation along with review of literature.

Matched MeSH terms: Dental Occlusion
Dento-facial relationships in individuals with normal occlusion

Al-Khatib AR, Rajion ZA, Masudi SM, Hassan R, Townsend GC

Homo, 2013 Aug;64(4):296-311.
PMID: 23755965 DOI: 10.1016/j.jchb.2013.04.002

The aim of this study was to evaluate the relationships of selected facial measurements with mesio-distal crown widths and dental arch dimensions in individuals with normal occlusions. A cross-sectional study was conducted on 276 subjects with Angle's Class I normal occlusions. Three-dimensional images of the face and dental casts were captured and analyzed using stereophotogrammetric systems. Significant correlations were found between the sagittal facial variables and both upper and lower dental arch dimensions and to lesser degree with the horizontal and vertical variables. The values of correlation coefficients calculated between facial and dental crown measurements ranged from .01 to .50 for upper teeth and .01 to .49 for lower teeth. The values of correlation coefficients between facial and upper dental arch dimensions ranged from .01 to .55 and those between facial and lower dental arch dimensions ranged from .01 to .60. A principal components analysis showed that the sagittal dimensions, face height, nose, labial fissure, binocular widths were positively associated with dental arch dimensions and mesio-distal crown diameters in males. On the other hand, only the sagittal variables were associated with dental dimensions in females. The results of this study confirm that positive associations exist between facial and dental arch dimensions. These relationships should be taken into consideration when attempts are made to modify dental arch size as part of orthodontic treatment. Moreover, these relationships are also relevant to prosthodontists involved with selecting tooth sizes that display optimal functional balance with the craniofacial structures.

Matched MeSH terms: Dental Occlusion*
Multiple external root resorption

Yusof WZ, Ghazali MN

J Am Dent Assoc, 1989 Apr;118(4):453-5.
PMID: 2708724

Presented is an unusual case of multiple external root resorption. Although the cause of this resorption was not determined, several possibilities are presented. Trauma from occlusion, periodontal and pulpal inflammation, and resorption of idiopathic origin are all discussed as possible causes.

Matched MeSH terms: Dental Occlusion, Traumatic/complications
Mixed dentition occlusion in 3 ethnic groups

Woon KC

Int J Orthod, 1988;26(3-4):16-9.
PMID: 3215739
Matched MeSH terms: Dental Occlusion*
Dentoalveolar Cleft Treatment Outcome Using Modified Huddart-Bodenham Index and Regression Analysis of Associated Factors

Arshad AI, Alam MK, Khamis MF

Cleft Palate Craniofac J, 2018 05;55(5):682-687.
PMID: 29518343 DOI: 10.1177/1055665618758278

OBJECTIVES: The aim of this study is to assess the treatment outcome of complete unilateral cleft lip and palate (CUCLP) patients using modified Huddart/Bodenham scoring system (MHB). To determine whether there is an association of congenital and postnatal factors with the treatment outcome.
DESIGN: Retrospective observational study.
SETTING: Two regional cleft-referral centers.
MAIN OUTCOME MEASURES: In the current study, 101 pairs of dental models of non-syndromic CUCLP patients were retrieved from hospital archives. Each occlusal relationship from central incisor till the first permanent molars were scored except the lateral incisor. Sum of 10 occlusal relationships in each study sample gave a total occlusion score. The primary outcome was the mean total occlusion score.
RESULTS: According to MHB, a mean (standard deviation) total occlusion score of -8.92 (6.89) was determined. Based on treatment outcome, 66 cases were favorable (grades 1, 2, and 3) and 35 cases were unfavorable (grades 4 and 5). Chi-square tests indicated, difference of cheiloplasty ( P = .001) and palatoplasty ( P < .001) statistically significant. Five variables-gender, family history of cleft, cleft side, cheiloplasty, and palatoplasty-were analyzed with a logistic regression model.
CONCLUSIONS: Final model indicated that cases treated with modified Millard technique (cheiloplasty) and Veau-Wardill-Kilner method (palatoplasty) had higher odds of unfavorable treatment outcome.

Matched MeSH terms: Dental Occlusion*
Fulltext Appropriate planning, thorough examinations and decent implementations for a predictable prognosis in the management of a severely worn dentition: a case report

Siti Mariam Ab Ghani, Lillywhite, Graeme

Compendium of Oral Science, 2014;1(1):30-39.
MyJurnal

The management of patients with severely worn dentition is challenging due to the loss of occlusal vertical dimension and tooth structure creating an uneven plane of occlusion. This case report describes the importance of every step of the conventional and improvised methods in treating tooth wear patients. Stages from the initial work-up of tooth wear assessment, substantial surgical crown lengthening, the controlled method of increasing vertical dimension, the precise method of crown preparations, advanced impression techniques till the cementation procedure of final restorations.

The whole treatment was in a reorganized approach such that the new inter-cuspal position (ICP) coincided with the retruded axial position (RAP). When restoring worn dentition, cl inician should always have a proper planning, decent implementation for each stages thus guarantee excellent performances. However maintenance and recall visits are the main keys to long term success.

Matched MeSH terms: Dental Occlusion
Fulltext Occlusal features of 12 years old Malaysian Malay school-children in Shah Alam

Elfseyie, Majda T.M., Nagham Mohammed Abdullah, Mohamed Ibrahim Abu Hassan

Compendium of Oral Science, 2014;1(1):6-12.
MyJurnal

Objectives: To assess the occlusal features, tongue habits, lip competence and their gender dimorphism in 12 years old Malaysian Malay school-children.

Materials and methods: The method involved cl inical examination of 208 subjects from public schools in Shah Alam, Selangor, Malaysia. Occlusal status was assessed according to Angle classification. The following features were also assessed and recorded: overjet, overbite, traumatic overbite, crowding, spacing, midline diastema, cross bite, scissors bite, dental midline shifts, canine displacement, missing teeth, traumatically fractured teeth, tongue thrust and lip competence. Descriptive statistics were used for all measurements; Chi-square was used to assess gender differences.

Results: Class I malocclusion is most prevalent in boys and girls (44.0% and 43.8% respectively), followed by Class Ill malocclusion (31% in boys and 30 .4% in girls). Anterior crowding was found in 69.7% of the sample while anterior spacing was found in 30.8%. Incompetent lips were more common in boys than gir1s.

Conclusions: The prevalence of malocclusion in this age group may warrant the need for more preventive and interceptive measures in dental and oral health planning.

Matched MeSH terms: Dental Occlusion

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