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Gerodontology Mar 2023This study aimed to compare differences between complete denture conditions self-rated by older adult wearers and clinically exanimated by a professional based on...
OBJECTIVES
This study aimed to compare differences between complete denture conditions self-rated by older adult wearers and clinically exanimated by a professional based on standardised aesthetics and functional criteria.
MATERIALS AND METHODS
Complete denture clinical examination was based on the functional (stability, retention, occlusion and articulation, vertical dimension of occlusion) and aesthetics criteria. Data on self-rated complete denture conditions were measured using the Patient's Denture Assessment (PDA) questionnaire based on standardised aesthetic and functional criteria (n = 122). Prevalence rates of clinical and self-rated complete denture condition, sensitivity, specificity, positive and negative predictive values, and absolute and relative bias were calculated.
RESULTS
The highest sensitivity (66.7% [95% CI 55.3-76.7]) was obtained for aesthetic criterion, whereas occlusion revealed the lowest sensitivity (14.9% [95% CI 6.2-28.3]). Stability had the highest specificity (91.3% [95% CI 72.0-98.9]) and aesthetics the lowest (21.4% [95% CI 8.3-41.0]). Stability also yielded the highest positive predictive value (83.3% [95% CI 51.6-97.9]), and vertical dimension of occlusion the lowest (26.3% [95% CI 9.1-51.2]). The vertical dimension of occlusion yielded the highest negative predictive value (71.2% [95% CI 58.7-81.7]). Self-rated data underestimated the complete denture condition in 6.5% compared with clinical examinations when the aesthetic criterion was excluded from the analysis and 7.6% when added.
CONCLUSIONS
Older adult wearers better identified the condition of their complete denture when the aesthetic criterion was excluded from examination. In contrast, considering functional criteria (retention, stability, occlusion and vertical dimension of occlusion), self-rated complete denture conditions underestimated clinical examination.
CLINICAL RELEVANCE
Using standardised aesthetic criteria in epidemiological studies for assessing complete denture conditions self-rated by wearers could avoid underestimating or overestimating the information regarding the use or need for dental prostheses.
Topics: Humans; Aged; Denture Retention; Denture, Complete; Dental Occlusion
PubMed: 35416323
DOI: 10.1111/ger.12631 -
Zhonghua Kou Qiang Yi Xue Za Zhi =... Aug 2022Early orthodontic treatment refers to the orthodontic treatment of dental-maxillofacial deformities in the early deciduous or mixed dentition. More and more attentions...
Early orthodontic treatment refers to the orthodontic treatment of dental-maxillofacial deformities in the early deciduous or mixed dentition. More and more attentions has been paid to early orthodontic treatment. Many kinds of orthodontic appliances are emerging on the market with the rapid development of the orthodontic technology. At the same time, problems and increased risks have followed in early orthodontic treatment. The contents of the article include the establishment of deciduous occlusion and the characteristics of the deciduous dentition, the orthodontic principles of different stages of deciduous dentition, the oral bad habits during the deciduous dentition and the risk control of early orthodontic treatment.
Topics: Dental Occlusion; Dentition, Mixed; Humans; Malocclusion; Orthodontic Appliances; Tooth, Deciduous
PubMed: 35970773
DOI: 10.3760/cma.j.cn112144-20220426-00217 -
Medical Engineering & Physics Feb 2021The aim of this study was to investigate gender-specific influences of different symmetric and asymmetric occlusion conditions on postural control during standing and...
The aim of this study was to investigate gender-specific influences of different symmetric and asymmetric occlusion conditions on postural control during standing and walking. The study involved 59 healthy adult volunteers (41 f/19 m) aged between 22 and 53 years (30.2 ± 6.3 years). Postural control measurements were carried out using a pressure plate by measuring plantar pressure distribution during standing and walking test conditions. Seven different occlusion conditions were tested. Prior to a MANOVA model analysis, the relationship between the two test conditions were checked using a factor analysis with a varying number of factors (between 2 and 10). The plantar pressure distributions during walking and standing are independent test conditions. The coefficient of variance across all variables between the conditions and genders was not significant: t(46) = 1.51 (p = 0.13). No statement can be made whether, or not, the influence of gender is greater than the influence of the conditions. Healthy male and female test subjects did not show any difference between seven occlusion conditions on the plantar pressure distribution while standing or walking. No differences between the genders were found for any of the investigated variables. In contrast to custom-made occlusion splints, simple cotton rolls appear not to influence the neuromuscular system in a systematic manner.
Topics: Adult; Dental Occlusion; Female; Foot; Humans; Male; Middle Aged; Postural Balance; Pressure; Walking; Young Adult
PubMed: 33485513
DOI: 10.1016/j.medengphy.2020.12.011 -
Journal of Oral Rehabilitation Feb 2022Occlusion can be viewed as the most sensitive susceptor of the central nervous system in the oro-facial region. Its inalienable relationships to the temporomandibular... (Review)
Review
BACKGROUND
Occlusion can be viewed as the most sensitive susceptor of the central nervous system in the oro-facial region. Its inalienable relationships to the temporomandibular joint, the muscles, the stomatognathic system and even the central nervous system are self-evident. Almost all the dental treatments inevitably change the occlusion, potentially or actually, locally or extensively, and immediately or gradually.
OBJECTIVE
The objective of this study was to present a narrative literature on occlusal disharmony and chronic oro-facial pain.
METHODS
Literature reviews focusing on clinical studies about the relationship between occlusal disharmony and myofascial oro-facial pain, and related preclinical studies about the animal models of, as well as the peripheral and central mechanisms underlying this condition related to, occlusal disharmony were used as starting point and guidelines to describe the topics mentioned. A search of the PubMed database was performed mainly with the following search terms: "occlusion," "occlusal interference," "occlusal disharmony," "occlusal change," "oro-facial pain" and "myofascial pain."
RESULTS
Relevant literature from the past 70 years until the present day was meticulously studied. The literature review together with three related characteristic clinical cases revealed an intimate association between occlusal disharmony and chronic oro-facial pain, involving pathological changes, extending from the peripheral tissues to the central nervous system. The patients suffered from psychological distress, sleep disturbance and poor life quality.
CONCLUSION
Occlusal disharmony-related oro-facial pain is a clinical problem that deserves attention, although there are no universally accepted clinical protocols. The existing literature provides some constructive suggestions, but further research is needed.
Topics: Animals; Chronic Pain; Dental Occlusion; Facial Pain; Humans; Temporomandibular Joint; Temporomandibular Joint Disorders
PubMed: 34333797
DOI: 10.1111/joor.13236 -
Journal of Oral Rehabilitation Sep 2021Centric relation is a dental term that has undergone many alterations over the years, which in turn have led to significant clinical controversies. These continuing... (Review)
Review
PURPOSE OF THE ARTICLE
Centric relation is a dental term that has undergone many alterations over the years, which in turn have led to significant clinical controversies. These continuing changes in the meaning of the term CR have not only led to confusion, but they also have resulted in a variety of unnecessary diagnostic and therapeutic procedures. Analysis of the dental literature reveals ongoing misunderstanding and disagreement regarding that term among both clinicians and academic dentists.
MATERIALS AND METHODS
A search of the PubMed database was performed with the following search terms: "centric relation", "masticatory muscles", "maxillomandibular relationship" and "condylar position." Relevant literature from the past 70 years until the present day was meticulously scrutinised.
RESULTS
As expected, the literature review on the topic of CR revealed a problematic pattern of changing definitions and clinical disagreements, all of which have had a significant impact on the practice of dentistry.
CONCLUSION
There are semantic, conceptual and practical reasons for concluding that the term 'centric relation' is flawed. Those flaws have a significant impact on dental practice. Based on our analysis, argumentation is provided to conclude that the term 'centric relation' should be abandoned. Instead, it appears that every individual has a unique temporomandibular joint relationship which cannot be described by any singular term. In healthy dentate patients, this relationship is determined by the maximum intercuspation of the teeth and should therefore be considered as biologically acceptable.
Topics: Centric Relation; Dental Occlusion, Centric; Humans; Jaw Relation Record; Mandibular Condyle; Masticatory Muscles; Temporomandibular Joint; Tooth
PubMed: 34164832
DOI: 10.1111/joor.13215 -
The Journal of Prosthetic Dentistry Sep 2019This comprehensive review of the 2018 dental literature is provided to inform busy dentists about progress in the profession. Developed by the Committee on Scientific... (Review)
Review
This comprehensive review of the 2018 dental literature is provided to inform busy dentists about progress in the profession. Developed by the Committee on Scientific Investigation of the American Academy of Restorative Dentistry, each author brings discipline-specific expertise to one of the 8 sections of the report including (1) prosthodontics; (2) periodontics, alveolar bone, and peri-implant tissues; (3) implant dentistry; (4) dental materials and therapeutics; (5) occlusion and temporomandibular disorders; (6) sleep-related breathing disorders; (7) oral medicine and oral and maxillofacial surgery; and (8) dental caries and cariology. The report targets important information that will likely influence day-to-day treatment decisions. Each review is not intended to stand alone but to update interested readers so that they may visit source materials if greater detail is desired. As the profession continues its march toward evidence-based clinical decision-making, an already voluminous library of potentially valuable dental literature continues to grow. It is the intention of this review and its authors to provide assistance in navigating the extensive dental literature published in 2018. It is our hope that readers find this work useful in the clinical management of patients moving forward.
Topics: Dental Caries; Dental Materials; Dental Occlusion; Humans; Periodontics; Prosthodontics; United States
PubMed: 31405523
DOI: 10.1016/j.prosdent.2019.05.010 -
Medical Principles and Practice :... 2023Satisfactory masticatory function is a significant indicator of improved oral health-related quality of life in older adults, either with or without artificial teeth....
OBJECTIVES
Satisfactory masticatory function is a significant indicator of improved oral health-related quality of life in older adults, either with or without artificial teeth. The purpose of this study was to examine masticatory performance of older adults with different prosthodontic reconstructions and occlusion, as well as to compare subjective and objective assessment of chewing performance.
MATERIAL AND METHODS
This study included 100 participants aged 65 and more. The chewing function questionnaire (CFQ) with answers on the Likert scale 0-4 (0 = no difficulties; 4 = maximum difficulties) was used as an indicator of subjective masticatory assessment. The two-color chewing gum test was used as objective assessment of masticatory function (mixing ability), based on the Z-score values. Dental occlusion was assessed using functional teeth units (FTU).
RESULTS
The results obtained using the CFQ and the clinical mixing ability test are in compliance with each other (r = 0.742). A decrease in the number of natural teeth, especially posterior teeth, progressively reduced chewing ability and increased difficulties in mastication. Participants with less FTUs, or with FTUs that are a part of removable denture, had greater reduction in masticatory function compared to those with FTUs composed of natural teeth or fixed partial dentures.
CONCLUSION
This study revealed a strong positive correlation between the subjective masticatory assessment in older adults using the validated questionnaire and the objective clinical test of the mixing ability of two chewing gums. Our data on influence of the number and the type of FTU on masticatory performance will be valuable when planning prosthodontic therapy.
Topics: Humans; Aged; Quality of Life; Dental Occlusion; Tooth; Chewing Gum; Surveys and Questionnaires; Mastication
PubMed: 36682349
DOI: 10.1159/000529240 -
Primary Dental Journal Nov 2019The 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... (Review)
Review
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.
Topics: Aging; Dental Care for Aged; Dental Occlusion; Dental Prosthesis, Implant-Supported; Humans; Prosthodontics; Tooth; Tooth Attrition; Tooth Wear
PubMed: 31666169
DOI: 10.1308/205016819827601545 -
Journal of Oral Rehabilitation Dec 2020To analyse occlusion time, occlusal balance and lateral occlusal scheme in subjects with various dental and skeletal characteristics.
OBJECTIVES
To analyse occlusion time, occlusal balance and lateral occlusal scheme in subjects with various dental and skeletal characteristics.
METHODS
A total of 132 subjects (50 males and 82 females) seeking orthodontic treatment were included in this prospective study. Using the T-Scan III version 7.0 (Tekscan Inc, South Boston, MA, USA), the occlusion time, occlusal balance and lateral occlusal schemes were recorded and compared with gender, Angle's occlusal classification, overjet, overbite, space analysis, skeletal and transverse relations. ANOVA, t test and contingency tables analyses were performed. Statistical significance was set at P < .05.
RESULTS
Occlusion time was significantly shorter in subjects with balanced occlusion (0.18 seconds, P < .001), Class I normal occlusion (0.35 seconds, P = .028) and Class I skeletal profile (0.37 seconds, P = .002). Occlusion time was significantly longer in subjects with decreased overjet (0.60 seconds, P = .003). There were significant associations between the distribution of occlusal balance and Angles' classes of occlusion, skeletal relationship, overjet, overbite and space analysis (P < .05). Lateral occlusal schemes were only associated with Angle's classes of occlusion and skeletal relationship (P < .05).
CONCLUSIONS
Patients with Class I occlusion showed the least occlusion time, the most balanced occlusion and a higher frequency of canine guidance. Nonetheless, potentially balanced occlusion and group function were highly prevalent in all groups; therefore, ideal occlusion must be considered an ideal to inspire and aim for, but cannot be considered an essential requirement of every dental treatment.
Topics: Dental Occlusion; Dental Occlusion, Balanced; Female; Humans; Male; Malocclusion; Malocclusion, Angle Class II; Overbite; Prospective Studies
PubMed: 32966657
DOI: 10.1111/joor.13095 -
Quintessence International (Berlin,... Jun 2022Bite force (occlusal force) may play a significant role in patient treatment outcomes. However, as a diagnostic risk assessment tool, it has been examined in the... (Review)
Review
Bite force (occlusal force) may play a significant role in patient treatment outcomes. However, as a diagnostic risk assessment tool, it has been examined in the literature but is not commonly utilized by practicing clinicians and in academic studies. This diagnostic evaluation may assist the dental clinician in planning tooth- and implant-supported restorations, as damage to the tooth, implant, or restoration may be dependent upon a restoration's resistance to loading conditions. The overall bite force has been estimated to be up to 2,000 N, with a clear sexual dimorphism and age dependence. The magnitude of these forces along the dental arch have been shown to be elevated in the posterior compared to the anterior region. The bite force magnitude has been inversely related to the proprioception, as a significant increase in bite force is seen in patients with endodontically treated teeth as compared to their vital teeth. Bite force has been linked to chewing efficiency, quality of life, and implicated in the life expectancy of the restorations. Restoration life expectancies have been associated with the material selection and preparation design parameters, both of which may be affected by masticatory bite force. Treatment planning criteria for preparation strategies affected by bite force include tooth location, material selection, occlusion pathways, and subsequent occlusal reduction amounts. When implants are used in patients with elevated magnitude of bite force, an increase in the number and diameter of the implants as well as occlusions with reduced occlusal tables buccolingually and lighter contacts may be recommended. An understanding of the magnitude and load of a patient's bite force can assist the dental clinician in the design of dental treatments along with other standard risk assessment criteria.
Topics: Bite Force; Dental Care; Dental Occlusion; Humans; Mastication; Quality of Life
PubMed: 35674169
DOI: 10.3290/j.qi.b3044939