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1.
J Oral Rehabil ; 47(12): 1503-1510, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32966657

RESUMEN

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.


Asunto(s)
Maloclusión de Angle Clase II , Maloclusión , Sobremordida , Oclusión Dental , Oclusión Dental Balanceada , Femenino , Humanos , Masculino , Estudios Prospectivos
2.
J Oral Rehabil ; 47(4): 494-500, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31804709

RESUMEN

Occlusal scheme is a controversial topic that has been linked to patient satisfaction with conventional complete dentures (CCDs). This study aimed to compare the patient satisfaction with CCDs with four different occlusal schemes namely the lingualised occlusion (LO), buccalised occlusion (BO), fully bilateral balanced occlusion (FBBO) and partially group function occlusion (PGFO). In this clinical study, new CCDs were made for 121 patients; out of which, 97 patients (mean age of 57.87 ± 9.5 years) completed the 1-year follow-up. The CCD wearers were followed up at 1 month, 3 months and 1 year after CCD delivery. Data were collected via an interview and recorded in a checklist by a blinded examiner. The checklist included the demographic variables, the 19-item version of Oral Health Impact Profile for Edentulous Patients (OHIP-EDENT), and seven 100-mm line visual analogue scales (VASs) to assess the items related to patient satisfaction. The Kruskal-Wallis and Friedman tests followed by post hoc tests were used to compare the variables among the 4 groups and between the 3 follow-ups. P-value ≤ .05 was considered statistically significant for all tests. The patients with BO presented higher satisfaction scores for comfort, stability and retention at the 1-year follow-up compared with PGFO. Both PGFO and FBBO groups had higher physical pain scores compared with BO and LO. The psychological discomfort scores of FBBO group were significantly higher than those in LO group. Pairwise comparisons revealed no significant differences in the general patient satisfaction and total OHIP-EDENT scores between the 4 groups. For most items, within-group analysis showed significant improvement of the satisfaction scores and reduction of domain scores over time.


Asunto(s)
Boca Edéntula , Satisfacción del Paciente , Anciano , Oclusión Dental Balanceada , Dentadura Completa , Humanos , Masticación , Persona de Mediana Edad , Calidad de Vida
3.
J Prosthodont ; 28(1): e159-e171, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29785794

RESUMEN

This fourth and final part of a four-part series concerned with the development of nonanatomic denture occlusion follows nonanatomic tooth design from the time of Victor Sears' first nonanatomic tooth patent through the end of the 20th century. Part IV concentrates on nonanatomic teeth developed during the last five decades of the 20th century. Many of the designs featured in this series exhibited genius, while others are pure nonsense. Sears claimed that a new nonanatomic tooth design appeared every 9 months on average during the first 30 years of nonanatomic tooth production. Many current nonanatomic tooth patents are further refinements of those earlier designs.


Asunto(s)
Articuladores Dentales/historia , Diseño de Dentadura/historia , Dentadura Completa/historia , Diente Artificial/historia , Diente/anatomía & histología , Articuladores Dentales/tendencias , Oclusión Dental , Oclusión Dental Balanceada , Diseño de Dentadura/tendencias , Dentadura Completa/tendencias , Historia del Siglo XX , Humanos , Diente Artificial/tendencias , Estados Unidos
4.
J Prosthodont ; 28(1): e148-e158, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29741216

RESUMEN

This second part of a four-part series concerned with the development of nonanatomic denture occlusion follows nonanatomic tooth design from the time of Victor Sears' first nonanatomic tooth patent through the mid-1930s. Many of the designs featured in this series exhibit genius, while others are pure nonsense. Sears claimed that a new nonanatomic tooth design appeared every 9 months on average during the first 30 years of nonanatomic tooth production. Many current nonanatomic tooth patents are further refinements of those earlier designs. Part II reviews pioneering designs that appeared during the first dozen or so years of this paradigm shift in denture occlusion philosophy.


Asunto(s)
Articuladores Dentales/historia , Diseño de Dentadura/historia , Diente Artificial/historia , Diente/anatomía & histología , Articuladores Dentales/tendencias , Oclusión Dental , Oclusión Dental Balanceada , Diseño de Dentadura/tendencias , Dentadura Completa/historia , Dentadura Completa/tendencias , Dentaduras/historia , Dentaduras/tendencias , Historia del Siglo XX , Humanos , Masticación , Diente Artificial/tendencias , Estados Unidos
5.
J Prosthodont ; 28(1): e138-e147, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29508469

RESUMEN

Part III of this four-part series about nonanatomic denture tooth development traces the evolution of this movement from the mid-1930s through the World War II era up to the early 1950s. By this time, the general preference for posterior denture occlusion had shifted from anatomic to nonanatomic teeth, and all the major denture tooth manufacturing companies listed at least one nonanatomic design in their inventories.


Asunto(s)
Articuladores Dentales/historia , Diseño de Dentadura/historia , Diente Artificial/historia , Diente/anatomía & histología , Articuladores Dentales/tendencias , Oclusión Dental , Oclusión Dental Balanceada , Diseño de Dentadura/tendencias , Dentadura Completa/historia , Dentadura Completa/tendencias , Dentaduras/historia , Dentaduras/tendencias , Historia del Siglo XX , Humanos , Diente Artificial/tendencias , Estados Unidos
6.
Evid Based Dent ; 19(4): 116-117, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30573857

RESUMEN

Data sourcesMedline, Scopus and Cochrane Library databases supplemented by searches in the journals; American Journal of Dentistry, Clinical Oral Investigation, International Journal of Prosthodontics, Journal of Dental Research, Journal of Oral Rehabilitation, Journal of Prosthodontics, Journal of Prosthodontic Research, Journal of Advanced Prosthodontics and Journal of Prosthetic Dentistry.Study selectionRandomised controlled trials (RCTs) or prospective studies comparing bilateral balanced occlusion (BBO) with other schemes, eg lingual occlusion (LO) canine guidance (CG) and neutral-centric or zero-degree (ZD).Data extraction and synthesisOne reviewer extracted the data and two reviewers assessed risk of bias using the Newcastle-Ottawa scale for non-randomised studies and the Cochrane risk of bias tool for RCTs. A narrative summary of the findings was presented.ResultsSeventeen studies, 11 RCTs and six prospective studies involving a total of 492 were included. Average follow-up period was 2.96 months (range 1-6 months). Six RCTs were considered to be at low risk of bias, two at unclear risk and three at high risk. Studies compared BBO with LO, CG and ZD. Twelve out of 16 studies reported on quality of life and patients satisfaction.ConclusionsThe present systematic review indicated that BBO does not confer better quality of life/satisfaction or masticatory performance and muscle activity. Thus, lingualised occlusion can be considered a predictable occlusal scheme for complete dentures in terms of quality of life/satisfaction and masticatory performance, while canine guidance can be used to reduce muscular activity.


Asunto(s)
Dentadura Completa , Calidad de Vida , Oclusión Dental , Oclusión Dental Balanceada , Humanos , Estudios Prospectivos
7.
J Oral Rehabil ; 45(9): 702-709, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-29851120

RESUMEN

The occlusion of choice is a controversial topic in conventional complete denture (CCD) treatment. This study aimed to compare patient satisfaction with CCD with partially group-function occlusion (PGFO), fully bilateral balanced occlusion (FBBO), buccalised occlusion (BO), lingualised occlusion (LO) and the entire balanced group. Participants received new CCDs with PGFO. All steps of patient enrolment, denture fabrication, assessments during the follow-up period and data collection were carried out exactly the same as part 1 of this research project. All patients were recalled at 1 and 3 months after delivery for data collection using the shortened version of oral health impact profile for edentulous patients (OHIP-EDENT) questionnaire and 7 visual analog scales (VASs) for the quality of CCD based on general patient satisfaction, masticatory function, ability to speak, comfort, stability, retention and aesthetics. Data were analysed using the Wilcoxon signed-rank test, the Kruskal-Wallis test and Mann-Whitney test via SPSS version 18.0 (α = 0.05). Thirty participants completed the follow-up period for PGFO group. The mean age ± standard deviation of the new participants was 57.97 ± 6.93 years. Participants reported significantly less satisfaction in terms of comfort, stability and retention of denture with PGFO compared to balanced groups. Also, using OHIP-EDENT questionnaire, significantly higher physical pain score was noted for PGFO group compared to BO and LO. Higher physical disability score was noted in PGFO compared to LO. Participants receiving CCDs with PGFO reported lower satisfaction in terms of comfort, stability and retention of denture and higher physical pain and physical disability than the balanced occlusal schemes.


Asunto(s)
Oclusión Dental Balanceada , Dentadura Completa , Masticación/fisiología , Boca Edéntula/rehabilitación , Satisfacción del Paciente/estadística & datos numéricos , Diseño de Dentadura , Retención de Dentadura/psicología , Dentadura Completa/psicología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Boca Edéntula/psicología , Calidad de Vida , Encuestas y Cuestionarios , Resultado del Tratamiento
9.
J Craniofac Surg ; 29(5): 1366-1369, 2018 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-29521757

RESUMEN

The present study aimed to find the proper distorotation of the upper first premolar to achieve the therapeutic ideal advocated for the stability of the human occlusion. Normal teeth were analyzed and occlusal photocopies of upper arch were made to perform the 2 measurements. The first parameter was the angle formed by the perpendicular to the wire through the buccal cusp and a line connecting the buccal and the lingual cusps of the upper first premolar. The second one was the angle from the buccal line and the sagittal plane of the model. The amount of distorotation was calculated and a method to bond the bracket was suggested.


Asunto(s)
Diente Premolar/anatomía & histología , Oclusión Dental Balanceada , Recubrimiento Dental Adhesivo , Humanos , Soportes Ortodóncicos , Ortodoncia Correctiva
10.
Eur J Prosthodont Restor Dent ; 26(1): 24-30, 2018 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-29469998

RESUMEN

Edentulism presents an ongoing challenge for prosthodontic dentistry. Many aspects of complete denture construction lack contemporary evidence. One such aspect is denture occlusion. Balanced occlusion (BO) has become the prevailing occlusal scheme. It has been suggested that canine guidance (CG) is unsuitable for complete denture occlusion due to an increased risk for tipping of the prostheses. However it may be indicated in patients with minimal alveolus resorption. There has been limited evidence suggesting the superiority of either occlusal scheme over another. This article investigates the available literature assessing complete denture occlusion by means of clinical trials or reviews of evidence. We utilised PRISMA guidelines to investigate the effect of complete denture occlusal scheme (balance occlusion vs. canine guidance) on functional or quality of life. Seven studies were included for review. All studies were poor to moderate quality with the majority lacking randomisation, blinding and demographic data from the study sample. The available evidence suggests that the differences between occlusal schemes may be small, challenging the notion that BO may be the optimal occlusal scheme. There is a need for high-quality clinical research, investigating both chewing ability and quality of life in complete denture wearers in the long-term.


Asunto(s)
Oclusión Dental Balanceada , Dentadura Completa , Calidad de Vida , Diseño de Dentadura , Humanos , Satisfacción del Paciente
11.
J Oral Rehabil ; 45(4): 344-354, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29314199

RESUMEN

No consensus has been reached regarding the best occlusal scheme for making complete dentures. Thus, the purpose of this systematic review was to compare bilateral balanced occlusion (BBO) with other occlusal schemes (canine guidance, lingualised occlusion and zero degree) in complete dentures. The schemes were compared in terms of quality of life/satisfaction and masticatory performance. Two independent reviewers performed a comprehensive search of studies published in or before October 2017 using the PubMed/MEDLINE, Scopus and Cochrane Library databases. The search was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. The focused question was: "In conventional complete denture, is BBO better than lingualised occlusion, canine guidance and zero degree in terms of quality of life, patient satisfaction and masticatory performance/muscle activity?" Seventeen studies were selected for analysis. In total, there were 492 patients with a mean age of 64.78 years and a mean follow-up duration of 2.96 months (range: 1-6 months). All studies compared BBO with the other occlusal schemes. Eleven studies evaluated the influence of the occlusal scheme designs on quality of life and satisfaction, and 8 studies evaluated masticatory performance and muscle activity between BBO and the other occlusion schemes. The present systematic review indicated that BBO does not confer better quality of life/satisfaction or masticatory performance and muscle activity. Thus, lingualised occlusion can be considered a predictable occlusal scheme for complete dentures in terms of quality of life/satisfaction and masticatory performance, while canine guidance can be used to reduce muscular activity.


Asunto(s)
Oclusión Dental Balanceada , Dentadura Completa , Masticación/fisiología , Boca Edéntula/cirugía , Oclusión Dental Balanceada/normas , Diseño de Dentadura , Humanos , Boca Edéntula/fisiopatología , Satisfacción del Paciente , Calidad de Vida
12.
Cranio ; 36(6): 396-403, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-28792294

RESUMEN

AIMS: The aim of this study was to test subjective interpretation accuracy via digital polling of a large group of dentists to determine whether dentists can reliably interpret occlusal forces by visually assessing articulating paper markings. METHODS: One hundred fifty-two dentists selected the most forceful occlusal contact in five occlusal-view photographs of articulating paper marks that were compared against T-Scan® relative occlusal levels of the same tooth contacts. RESULTS: The mean correct response was a mere 13.13% correct (86.87% incorrect). Random chance was calculated at 16.7% correct. The cuspid contacts were the least often chosen as the most forceful contact. The Mann-Whitney U test found a significant difference between choosing the anterior teeth vs. posterior teeth. onclusions: Subjective interpretation is an inaccurate method for determining high force occlusal contacts. The reported low correct percentage fell below random chance, suggesting that dentists are unable to detect high occlusal force from looking at articulating paper marks.


Asunto(s)
Fuerza de la Mordida , Oclusión Dental , Odontólogos , Registro de la Relación Maxilomandibular/métodos , Papel , Oclusión Dental Balanceada , Humanos
13.
J Oral Rehabil ; 45(1): 41-49, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28965369

RESUMEN

BACKGROUND: Occlusal scheme can affect denture retention, stability, occlusal force distribution, aesthetics, masticatory function, patient comfort and general patient satisfaction with dentures. OBJECTIVES: This study aimed to compare the patient satisfaction with 3 types of complete denture occlusion including fully bilateral balanced occlusion (FBBO), newly presented buccalised occlusion (BO) and lingualised occlusion (LO). METHODS: In this parallel randomised clinical trial, new conventional complete dentures were fabricated for 86 volunteers. Participants were randomly allocated to 3 groups with 3 different occlusal schemes. All patients were recalled at 1 and 3 months after delivery for data collection. The 19-item version of Oral Health Impact Profile for Edentulous Patients questionnaire was used in this study. The visual analogue scale (VAS) was used for assessment of the prosthodontist's attitude towards denture quality, patient's attitude towards different occlusal schemes and evaluation of patient satisfaction. Data were analysed using the Wilcoxon signed rank test, the Kruskal-Wallis test and the post hoc Dunn test via SPSS version 18.0 (P ≤ .05). RESULTS: Eighty-six patients completed the study, and their data were analysed (mean age ± standard deviation = 57.78 ± 9.98 years). The only significant difference when comparing the 3 groups was physical pain, which was significantly higher in FBBO group. No significant differences were found for the VAS scores of patient and prosthodontist satisfaction or the domain scores among the 3 occlusal schemes either at 1 or at 3 months post-delivery. The VAS score of patient satisfaction and prosthodontist satisfaction increased at third compared to first month after delivery. CONCLUSION: The results of this randomised clinical trial provided evidence that BO is as effective as LO for the fabrication of complete dentures.


Asunto(s)
Dentadura Completa , Boca Edéntula , Satisfacción del Paciente/estadística & datos numéricos , Oclusión Dental Balanceada , Diseño de Dentadura , Retención de Dentadura , Dentadura Completa/psicología , Ingestión de Alimentos/fisiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Boca Edéntula/psicología , Boca Edéntula/rehabilitación , Resultado del Tratamiento
14.
Rev. Ateneo Argent. Odontol ; 59(2): 33-43, 2018.
Artículo en Español | LILACS | ID: biblio-1051509

RESUMEN

La obtención de resultados adecuados en un tratamiento ortodóncico hace que el clínico busque en autores y sus publicaciones, información conceptual y técnicas para su práctica clínica (conocimientos y procedimientos). Los avances científicos resultan de conocimientos previos, los cuales, a la luz de nuevos aportes, serán modificados, ampliados o rechazados. En las publicaciones científicas las referencias bibliográficas aportan, o a veces parecen aportar, autoridad a los autores. El objetivo del presente análisis es reflexionar sobre la publicación original del Dr. Andrews: "Las seis claves de la oclusión normal" (AU)


Suitable in an orthodontic treatment results make that the clinical search authors and their publications conceptual information and techniques for your clinical practice (knowledge and procedures). Scientific advancements result from previous knowledge which, in the light of new contributions, will be modified, expanded or rejected. In scientific publications bibliographic references contribute, or sometimes seem to provide authority to the authors. The objective of this analysis is to reflect upon the original publication of Dr. Andrews: "The six keys of normal occlusion" (AU)


Asunto(s)
Ortodoncia Correctiva , Oclusión Dental , Oclusión Dental Balanceada , Ortodoncia/historia , Estados Unidos
15.
Prosthes. Lab. Sci ; 7(25): 14-21, out.-dez. 2017. ilus
Artículo en Portugués | LILACS, BBO - Odontología | ID: biblio-880534

RESUMEN

Este artigo descreve os passos para a utilização da filosofia da Técnica da Zona Neutra. Através dessa filosofia, procura-se localizar uma área, em boca, onde as forças geradas pela língua são neutralizadas pelas forças geradas pelos lábios e bochechas, estabilizando assim a prótese.


This article describes step-by-step the application of the Neutral Zone technique philosophy. It is based upon the concept that for each individual patient, there is within the denture space a specific area where the function of the musculature will not unseat the denture and where forces generated by the tongue are neutralized by the forces generated by the lips and cheeks.


Asunto(s)
Humanos , Fenómenos Biomecánicos , Técnica de Impresión Dental , Oclusión Dental Balanceada , Diseño de Dentadura/métodos , Retención de Dentadura , Dentadura Completa Inferior
16.
Oral Maxillofac Surg ; 21(2): 233-240, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28386782

RESUMEN

BACKGROUND: The main goal of treatment of mandibular fractures is to restore normal dental occlusion and promote appropriate bone healing and a normal mouth opening. Recently, there has been a resurgent interest in the use of screws for intermaxillary fixation of mandibular fractures. This study was therefore designed to determine how the clinical outcomes of the use of screws for intermaxillary fixation compare with the use of miniplates in the treatment of mandibular fractures in Nigeria. OBJECTIVES: The objectives of this study are as follows: 1. To compare the clinical outcomes of the use of 2.0 mm × 9.0 mm screws for intermaxillary fixation with 2.0 mm noncompression miniplates in the treatment of simple unilateral mandibular fractures in Lagos, Nigeria 2. To determine the clinical outcomes in the use of 2.0 mm × 9.0 mm screws for intermaxillary fixation (IMF) and 2.0 mm noncompression miniplates in the treatment of simple unilateral mandibular fractures 3. To compare the complications associated with the use of 2.0 mm × 9.0 mm screws for IMF and 2.0 mm noncompression miniplates in the treatment of mandibular fractures METHODOLOGY: This randomized controlled clinical study was carried out at the Department of Oral and Maxillofacial Surgery of the study institution. Subjects with simple unilateral mandibular fractures who met the inclusion criteria were randomly allocated into the study (intermaxillary fixation screw) and control (miniplate) groups through balloting. Factors assessed and compared during and after the procedures included intraoperative pain, postoperative nerve impairment, postoperative occlusion, limitation of mouth opening, incidence of hardware failure, incidence of infection and non-union. Data was analysed using the Statistical Package for Social Sciences (SPSS) version 20. RESULTS: A total of 56 subjects participated in the study, with 28 subjects in each group. Majority (91%) of the subjects were male. Road traffic crash was the highest aetiological factor while sport was the least (3.6%). A higher proportion (25.0%) of subjects in the miniplate group had major complications compared with 14.3% in the IMF screw group. There was no statistically significant association between site of mandibular fracture, time elapsed before treatment and complications (p < 0.05). All cases of mandibular fractures healed successfully at 6 weeks. CONCLUSION: The use of screws for IMF is as effective as 2.0 mm noncompression miniplates in the treatment of simple unilateral mandibular fractures.


Asunto(s)
Placas Óseas , Tornillos Óseos , Oclusión Dental Balanceada , Fijación Interna de Fracturas/instrumentación , Fracturas Mandibulares/cirugía , Maxilar/cirugía , Adolescente , Adulto , Femenino , Estudios de Seguimiento , Curación de Fractura/fisiología , Humanos , Masculino , Persona de Mediana Edad , Nigeria , Estudios Prospectivos , Resultado del Tratamiento , Adulto Joven
17.
J Orofac Orthop ; 78(4): 275-283, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28409195

RESUMEN

OBJECTIVE: Long-term posttreatment stability of anterior tooth alignment is of major interest to both patients and orthodontists. In the present study we examined the long-term outcome 10 years postretention and investigated the possible influence of treatment-related factors on posttreatment stability of maxillary and mandibular anterior tooth alignment. METHODS: The sample comprised 51 patients treated with full fixed appliances in a university clinic. Average retention time was 1.8 years. All patients received a Hawley appliance in the maxilla and a bonded canine-to-canine retainer in the mandible. The Peer Assessment Rating (PAR) Index, Little's Irregularity Index (LII) and dental cast variables were recorded at pretreatment, posttreatment and 10 years out of retention. Stability of occlusion was assessed with the PAR score percentage improvement method. For each jaw a multivariate regression analysis was performed to identify the influence of treatment-related factors on postretention tooth alignment. RESULTS: The PAR Index percentage improvement decreased from 73.1% posttreatment to 53.5% 10 years out of retention. For both jaws posttreatment increase in anterior irregularity was significantly correlated with the degree of treatment correction. The strongest association was found in the maxilla. Premolar extractions were associated with increased stability of mandibular alignment. CONCLUSIONS: The need for retention appears to increase with the degree of alignment correction, particularly in the maxilla. Extraction of premolars significantly improved long-term stability of mandibular incisor alignment.


Asunto(s)
Diente Canino , Oclusión Dental Balanceada , Incisivo , Maloclusión/terapia , Retenedores Ortodóncicos , Ortodoncia Correctiva , Técnicas de Movimiento Dental , Adolescente , Adulto , Femenino , Estudios de Seguimiento , Humanos , Indice de Necesidad de Tratamiento Ortodóncico , Masculino , Adulto Joven
18.
Cranio ; 35(3): 135-151, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-27332882

RESUMEN

OBJECTIVES: Studies involving electrognathographic (EGN) recordings of chewing improvements obtained following occlusal adjustment therapy are rare, as most studies lack 'chewing' within the research. The objectives of this study were to determine if reducing long Disclusion Time to short Disclusion Time with the immediate complete anterior guidance development (ICAGD) coronoplasty in symptomatic subjects altered their average chewing pattern (ACP) and their muscle function. METHODS: Twenty-nine muscularly symptomatic subjects underwent simultaneous EMG and EGN recordings of right and left gum chewing, before and after the ICAGD coronoplasty. Statistical differences in the mean Disclusion Time, the mean muscle contraction cycle, and the mean ACP resultant from ICAGD underwent the Student's paired t-test (α = 0.05). RESULTS: Disclusion Time reductions from ICAGD were significant (2.11-0.45 s. p = 0.0000). Post-ICAGD muscle changes were significant in the mean area (p = 0.000001), the peak amplitude (p = 0.00005), the time to peak contraction (p < 0.000004), the time to 50% peak contraction (p < 0.00001), and in the decreased number of silent periods per side (right p < 0.0000002; left p < 0.0000006). Post-ICAGD ACP changes were also significant; the terminal chewing position became closer to centric occlusion (p < 0.002), the maximum and average chewing velocities increased (p < 0.002; p < 0.00005), the opening and closing times, the cycle time, and the occlusal contact time all decreased (p < 0.004-0.0001). CONCLUSION: The average chewing pattern (ACP) shape, speed, consistency, muscular coordination, and vertical opening improvements can be significantly improved in muscularly dysfunctional TMD patients within one week's time of undergoing the ICAGD enameloplasty. Computer-measured and guided occlusal adjustments quickly and physiologically improved chewing, without requiring the patients to wear pre- or post-treatment appliances.


Asunto(s)
Oclusión Dental Balanceada , Análisis del Estrés Dental/métodos , Electrodiagnóstico/métodos , Electromiografía/métodos , Maloclusión/terapia , Masticación/fisiología , Ajuste Oclusal/métodos , Humanos , Maloclusión/fisiopatología , Músculos Masticadores/fisiopatología , Contracción Muscular , Procesamiento de Señales Asistido por Computador
19.
J Prosthodont Res ; 61(2): 113-122, 2017 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-27474364

RESUMEN

PURPOSE: A lingualized occlusion (LO) for complete dentures reduces lateral inferences and occlusal force contacts and direction; thus, LO is theorized to be more suitable for patients with compromised ridges than fully bilateral balanced articulation (FBBA). However, no studies have yet provided evidence to support LO in edentate patients with compromised alveolar ridges. The purpose of this study was to compare LO and FBBA in edentulous individuals with compromised ridges. METHODS: Sixty edentulous individuals were randomly allocated into groups and received dentures with either LO or FBBA. Following delivery, several denture-related satisfaction variables were measured using 100mm visual analogue scales; oral health-related quality of life (OHRQoL) was also assessed using the Oral Health Impact Profile (OHIP). Sub-group analyses of the effect of moderate and severe mandibular bone loss were also carried out. RESULTS: No significant differences were detected between LO and FBBA with the primary outcome. At 6 months, participants with severely atrophied mandibles and FBBA rated their satisfaction with retention of mandibular dentures significantly lower than those with LO (median LO: 86, FBBA: 58.5, p=0.03). They also had significantly lower OHRQoL for the domain of Pain (median LO: 4, FBBA: 5, p=0.02). General satisfaction and total OHIP scores significantly improved between baseline and 6 months only for the LO subjects with severely atrophied mandibles (satisfaction: p=0.003, OHIP total score: p=0.0007). CONCLUSIONS: The results indicate that the LO occlusal scheme with hard resin artificial teeth is more efficient for patients with severely resorbed mandibular ridges.


Asunto(s)
Oclusión Dental Balanceada , Oclusión Dental , Dentadura Completa/psicología , Boca Edéntula/psicología , Satisfacción del Paciente , Anciano , Anciano de 80 o más Años , Proceso Alveolar/patología , Fuerza de la Mordida , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Salud Bucal , Calidad de la Atención de Salud , Resinas Sintéticas , Diente Artificial
20.
Spec Care Dentist ; 37(2): 99-101, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-27935091

RESUMEN

Complete edentulism often limits patients' ability to masticate and perform other oral functions, resulting in a reduction of oral-health-related quality of life. Although the two-implant mandibular overdenture may be considered as a minimum standard of treatment of complete edentulism, patients often prefer conventional complete dentures due to cost and surgical procedures related to implant supported dentures. Many complete denture patients may have limited access to dental care due to socioeconomic or health issues, hence there is a need in simplification of complete denture fabrication. Researchers have proposed "simplified" techniques to fabricate complete dentures by eliminating two stage impression procedures facebow transfer, and articulator programming, with impressive initial results. However, long-term clinical data of these techniques is unavailable. A novel technique for fabricating simplified complete dentures in three visits, using patient's existing dentures is presented here. Unlike previously described techniques on "simplified" dentures, this technique does not eliminate vital steps such as border-molded impressions, facebow transfer, verification of centric relations during try-in, programming of the articulator, and balancing procedures.


Asunto(s)
Cuidado Dental para Ancianos , Diseño de Dentadura , Dentadura Completa , Boca Edéntula/rehabilitación , Anciano , Relación Céntrica , Oclusión Dental Balanceada , Bases para Dentadura , Retención de Dentadura , Estética Dental , Femenino , Humanos , Registro de la Relación Maxilomandibular , Masculino , Satisfacción del Paciente , Calidad de Vida
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