Cambios en parámetros masticatorios con prótesis parcial removible para dientes posteriores perdidos / Changes in masticatory parameters with removable partial dentures for missing posterior teeth

Introducción: el reemplazo de dientes perdidos aspira a mejorar la función masticatoria. Aunque hay diferentes opciones para ello, la conveniencia de la prótesis parcial removible (PPR) es su bajo costo. Objetivo: comparar el desempeño masticatorio (DM) después de 20 ciclos masticatorios y al umbral de la deglución (UD) en adultos de 50 a 70 años con dientes posteriores perdidos (DPP), con/sin PPR; y los ciclos hasta la deglución. Material y métodos: estudio transversal en 35 adultos con dientes anteriores y PPR bien ajustadas y utilizadas para comer. El lado de prueba fue el lado con más DPP. El DM se evaluó después de 20 ciclos y al UD utilizando un alimento prueba artificial (Optosil Comfort®) con/sin la PPR en orden aleatorizado. Las partículas se tamizaron para determinar el tamaño medio de partícula (TMP) como medida del DM. Los ciclos se contaron visualmente. Estadística descriptiva y comparaciones con SPSS-v23. Resultados: hubo diferencias significativas (p ≤ 0.05) al masticar con/sin PPR. El TMP fue más pequeño (mejor DM) con la PPR después de 20 ciclos y al UD (3.9 vs 4.4 mm y 3.2 vs 4.2 mm). Los ciclos para llegar al UD disminuyeron con la PPR (40 vs 47). Conclusión: a pesar de una mejora limitada de la función masticatoria, las PPR ayudan a preparar los alimentos en partículas más pequeñas antes de deglutirlas. La mejoría en DM con PPR es de 24% al UD, realizando menos ciclos antes de deglutir sus alimentos (AU)

Introduction: replacement of missing teeth should improve masticatory function. Although there are different options removable partial dentures (RPD) are used due to their lower cost. Objective: to compare masticatory performance (MP) after 20 chewing-cycles and swallowing-threshold (ST) in 50-70 year-old adults with missing posterior teeth (MPT) with and without their cast-metal RPD; chewing cycles until swallowing were also compared. Material and methods: 35 adults participated in this cross-sectional study. Subjects with anterior teeth and welladjusted RPDs, used for eating were included. The side with more MPT was selected as the test side. MP was evaluated after 20 cycles and ST using an artificial test-food (Optosil Comfort®) with/without the RPD (subject-own-control) (randomized order). Chewed particles were sieved to determine medium-particle-size (MPS) as a measure of MP. Chewing cycles were visually counted. Descriptive statistics and comparisons were run with SPSS v23. Results: there were significant differences (p ≤ 0.05) for all parameters when chewing with/without the RPD. MPS was smaller (better MP) with the RPD (3.9 vs 4.4 mm and 3.2 vs 4.2 mm) after 20 cycles and ST respectively. Cycles required to reach ST were less when chewing with the denture (40 vs 47). Conclusion: despite a limited improvement of masticatory function RPDs help patients prepare their food into smaller particles before swallowing. Improvement in MP with RPDs for patients with MPT is 24% at ST and they perform fewer chewing cycles before swallowing food (AU)

Relationship between tooth loss, nutritional status and consumption of macro and micronutrients in elderly people from southern Brazil

Maintaining a functional natural dentition plays an important role in keeping a satisfactory nutritional status. The aim of this study was to evaluate the relationship between oral health conditions determined by the presence of edentulism and the number of missing teeth, nutritional status and consumption of nutrients by the elderly. This cross-sectional study comprised 494 independent elderly of both genders, over 60 years of age, registered at the Brazilian public health service in Londrina, southern Brazil. The data collection included: oral examinations; anthropometric measurements by calculating the Body Mass Index (BMI); analysis of food consumption based on a multiple pass 24-hour dietary recall and a food intake frequency questionnaire; and structured interviews to obtain sociodemographic information. Multiple linear regression, the Fisher's Exact test, chi-square and Mann-Whitney tests, were applied at a 5% significance level. The prevalence of edentulism was 47.3%; this predominated in females, age group from 65 to 74 years, low education level and low/medium economic classification. A larger numberof underweight and fewer number of overweight elderly were recorded among the edentulous versus dentate participants (< 0.0001). Significantly lower consumption of several nutrients, as well as fruit, was recorded among the edentulous group. In particular, carbohydrates, vitamins (B1, B9 and C), and the majority of the minerals studied were associated with a larger number of missing teeth. In conclusion, tooth loss was associated with the food consumption pattern of some macro-and micronutrients and the nutritional status of the Brazilian elderly.

Implant-based Oral Rehabilitation in Systemic Sclerosis Patients: A Systematic Review.

Systemic sclerosis is a rare multisystem autoimmune disorder that significantly impacts the orofacial region. Several oral features including microstomia and increased tooth loss contribute to the mouth-related disability. Prosthetic rehabilitation is very challenging in these patients. As the spectrum of dental implants indications has been recently extended to patients with various systemic disorders, the aim of this systematic review was to evaluate the outcome of dental implants in patients with systemic sclerosis. A literature search was conducted in Medline/PubMed database to identify eligible case reports. Ten publications were included in qualitative synthesis. A total of 71 implants have been reported in 10 patients with systemic sclerosis with a mean of 7.1 ± 3.8 implants per patient. Preimplant surgeries have been described for 3 patients. Implant survival rates were higher than 98%, but the mean follow-up time was only 28.3 ± 18.6 months. Complications have been observed in 3 patients with 1 implant failure and peri-implant bone resorption in 2 patients. Although implant survival rates were high, an individualized assessment of risk-benefit balance is mandatory before indicating implant-based rehabilitation in patients suffering from systemic sclerosis and a scrupulous maintenance program has to be implemented. Further studies are strongly required to establish clinical guidelines.

Dental prosthetic treatment reduced the risk of weight loss among older adults with tooth loss.

OBJECTIVES: Weight loss is a critical health issue in older adults. Oral function is essential for nutrient intake and can be restored using dental prosthetic treatments in patients with tooth loss. This study aimed to investigate the relationship between tooth loss and weight loss among the older adults and to evaluate the magnitude of its risk reduction by dental prosthetic treatment. DESIGN: Three-year follow-up longitudinal study based on a self-reported questionnaire. SETTING: Community-dwelling older adults in Japan. PARTICIPANTS: Adults aged 65 and older (n = 53,690). MEASUREMENTS: We used >10% weight loss during follow-up, the number of remaining teeth, and the use of dental prostheses as the outcome variable, exposure variable, and mediator, respectively. We fitted the logistic regression model including possible confounders and calculated the odds ratios (ORs) and 95% confidence intervals (95% CIs) of the controlled direct effect (CDE) at the level of use or nonuse of the dental prosthesis based on a causal mediation analysis framework. Additionally, we calculated the proportion eliminated by the dental prosthesis. RESULTS: The mean age of participants was 72.6 years (1 SD = 5.5), and 47.4% were males. About 5.8% (n = 3132) of them experienced >10% weight loss during the follow-up. Weight loss was observed in 6.8% of the participants with 0-19 remaining teeth and in 4.3% of them with ≥20 remaining teeth. The CDE of 0-19 remaining teeth was greater when no one used dental prosthesis (OR = 1.41; 95% CI = 1.26-1.59) compared with that when all participants used dental prosthesis (OR = 1.26; 95% CI = 1.08-1.46). This indicated that dental prosthesis decreased the risk of weight loss by 37.3%. CONCLUSION: Our study revealed that tooth loss increased the risk of clinically critical levels of weight loss among community-dwelling older adults. However, this risk was reduced by dental prosthetic treatment.

Guía de práctica clínica salud oral integral: tratamiento y rehabilitación oral en personas adultas y personas mayores con edentulismo parcial o total oral integral: tratamiento y rehabilitación oral en personas adultas y personas mayores con edentulismo parcial o total / Comprehensive oral health clinical practice guide: oral treatment and rehabilitation in adults and older people with partial or total edentulism. Comprehensive oral: oral treatment and rehabilitation in adults and older people with partial or total edentulism

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In the dental implant era, why do we still bother saving teeth?

Teeth are vital sensory organs that contribute to our daily activities of living. Unfortunately, teeth can be lost for several reasons including trauma, caries, and periodontal disease. Although dental trauma injuries and caries are more frequently encountered in a younger population, tooth loss because of periodontal disease occurs in the older population. In the dental implant era, the trend sometimes seems to be to extract compromised teeth and replace them with dental implants. However, the long-term prognosis of teeth might not be comparable with the prognosis of dental implants. Complications, failures, and diseases such as peri-implantitis are not uncommon, and, despite popular belief, implants are not 99% successful. Other treatment options that aim to save compromised or diseased teeth such as endodontic treatment, periodontal treatment, intentional replantation, and autotransplantation should be considered on an individual basis. These treatments have competing success rates to dental implants but, more importantly, retain the natural tooth in the dentition for a longer period of time. These options are important to discuss in detail during treatment planning with patients in order to clarify any misconceptions about teeth and dental implants. In the event a tooth does have to be extracted, procedures such as decoronation and orthodontic extrusion might be useful to preserve hard and soft tissues for future dental implant placement. Regardless of the treatment modality, it is critical that strict maintenance and follow-up protocols are implemented and that treatment planning is ethically responsible and evidence based.

[The absence of functional dentition is associated with the lack of commitment to oral functions among Brazilian adults]. / A falta de dentição funcional está associada ao comprometimento das funções bucais entre adultos brasileiros.

The scope of this study was to identify if the absence of functional dentition (FD) is associated with a lack of commitment to oral functions/daily activities among Brazilian adults. For this purpose, data from the National Survey of Oral Health (referred to as SB Brasil 2010) was used. FD was evaluated by the criterion proposed by the WHO (at least 20 teeth in the mouth). The Oral Impacts on Daily Performance (OIDP) questionnaire was used to evaluate daily activities/oral functions. Descriptive, bivariate (chi-squared) and multiple (logistic regression) analysis was conducted, and the odds ratio estimated with a 95% confidence interval (OR/CI95%). The research evaluated 9,564 adults, of which 2,200 adults (20.5%) were considered to have poor FD, and at least one of the daily activities/oral functions evaluated had an impact among 55% of adults. The lack of FD between adults was associated (p ≤ 0.05) with the impact on speech (1.88/1.33-2.64) and being ashamed to smile or talk (1.35/1.00-1.83). A considerable prevalence of lack of FD was identified, this absence being associated with the lack of commitment to the daily activities/oral functions. Dental rehabilitation of patients with a lack of FD should consider the restoration of these lost oral functions (speech and being ashamed to smile or talk).

Objetivou-se identificar se a falta de dentição funcional (DF) está associada com o comprometimento das funções bucais/atividades diárias entre adultos brasileiros. Para isto, foram utilizados dados da Pesquisa Nacional de Saúde Bucal - SB Brasil 2010. A DF foi avaliada pelo critério proposto pela Organização Mundial de Saúde (pelo menos 20 dentes na boca). O instrumento Impactos Odontológicos nos Desempenhos Diários (IODD) foi utilizado para avaliar as atividades diárias/funções bucais. Análises descritivas, bivariadas (Qui-quadrado) e múltiplas (Regressão Logística) foram realizadas, sendo estimado o odds ratio e o intervalo de confiança 95% (OR/IC95%). Foram incluídos e avaliados 9564 adultos. Foram considerados sem DF 2200 adultos (20,5%). Tiveram impacto em pelo menos uma das atividades diárias/funções bucais avaliadas, 55,0% dos adultos. A falta de DF entre adultos foi associada (p ≤ 0,05) com o impacto na fala (1,88/1,33-2,64) e vergonha ao sorrir ou falar (1,35/1,00-1,83). Uma prevalência considerável de falta de DF foi identificada, esta ausência foi associada às atividades diárias/funções bucais (fala e vergonha ao sorrir e falar). A reabilitação dentária de pacientes sem DF deve considerar a devolução destas funções bucais perdidas (fala e vergonha ao sorrir ou falar).

Patient-reported effect of oral rehabilitation.

OBJECTIVES: To quantify the patient-reported effect of oral rehabilitation and investigate aspects associated with this. METHODS: The patient-reported effect in participants treated with fixed dental prosthesis (FDP; n = 72) or removable dental prosthesis (RDP; n = 58) was measured using the Oral Health Impact Profile 14 (OHIP-14) and global oral ratings (GOR) of aesthetics, chewing and comfort before and after treatment and global transition judgements (GTJ) of aesthetics, chewing and comfort after treatment. Explanatory variables included gender, age, if a prosthetic replacement was present before treatment, type of prosthetic treatment performed, number of teeth replaced and zone of the teeth replaced. RESULTS: The RDP and FDP treatments both significantly improved the OHIP-14 score with a moderate to large effect and most participants had good patient-reported effect. The effect varied depending on the method used. In the bivariate analyses, the number of participants with good effect was higher in the RDP group than the FDP group when using the OHIP-14 and GOR whereas the effect was higher in the FDP group when using the GTJ. Multiple regression analyses showed that poor chewing ability before treatment was associated with good effect measured by the OHIP-14 and GOR and that poor effect in chewing ability and RDP treatment was associated with poor effect in comfort measured by GTJ. Functional problems after treatment were associated with no/poor effect. CONCLUSIONS: Oral rehabilitation with fixed or removable prostheses in general yields good patient-reported effect. Masticatory aspects highly influence the patient-reported effect and treatment with RDP is associated with poor effect in oral comfort.

Rehabilitation of lost teeth related to maintenance of cognitive function.

OBJECTIVE: As the era of aging comes, cognitive impairment (CI) is increasing. The impact of rehabilitation of lost tooth on CI remains unclear. This study aimed to investigate whether non-rehabilitated lost teeth (NRLT) is associated with CI among Korean elders. METHODS: A total of 280 elders comprising of 140 cases and 140 age-sex-matched controls were included in this cross-sectional study. CI was assessed using the Mini-Mental Status Examination (MMSE). NRLT was evaluated using panoramic radiograph and oral examination. NRLT was categorized into low (≤4) and high (≥5). Age, sex, education, drinking, smoking, exercise, obesity, hypertension, subclinical atherosclerosis, glucose, cholesterol, depression, and denture-wearing were considered as confounders. Conditional multivariate logistic regression analysis was applied to assess the adjusted association. RESULTS: NRLT was associated with increased CI after controlling for confounders (odds ratio [OR] = 1.06, 95% confidence interval [95% CFI]: 1.00-1.13). However, lost teeth were not associated with CI. Those with high NRLT (≥5) compared to those with low NRLT (≤4) was more likely to have CI by 2.7 times (OR = 2.74, 95% CFI = 1.28-5.86). CONCLUSION: Our data showed that NRLT was independently associated with CI. Hence, rehabilitation of the lost teeth could be important for the maintenance of cognitive function.

Undesirable course of an oral implant rehabilitation in a patient with a long history of bulimia nervosa: case report and review of the literature.

BACKGROUND: Bulimia nervosa is an eating disorder resulting in an intended weight loss due to decreased food intake, induced vomiting, or hyperactivity, and is observed frequently between 12 and 25 years of age. One of the complications is early tooth loss. Moreover, since bulimia nervosa patients suffer from increased atrophy of the alveolar processes, oral rehabilitation even with short dental implants may be impossible. In these cases, lateralization or transposition of the inferior alveolar nerve (IAN) followed by implant placement can be useful. CASE PRESENTATION: A 40-year-old woman with a long-lasting history of bulimia nervosa requested a fixed rehabilitation of her partially edentulous mandible. In 2012, a bilateral IAN transposition approach was performed using piezosurgery, and without any postoperative neurosensory alterations. Two years later, bilateral insertion of each two implants was followed by an inflammatory destabilization of the lower left mandible; subsequent to the implant removal, a fracture occurred, and the latter was stabilized by osteosynthesis plates. In 2017, three additional implants were placed, finally providing the patient with a fixed restoration on five implants. CONCLUSION: Eating disorders may have a tremendous impact on both physical condition and oral health, resulting in early tooth loss and severe bone atrophy. IAN transposition is a viable treatment option to enable installing fixed prostheses via dental implants, but the latter will clearly increase the risk of inflammation and interruption of mandibular continuity. Close clinical and radiologic monitoring is mandatory to adequately respond to complications such as peri-implant mucositis, peri-implantitis, osteomyelitis, or concomitant fractures.

A falta de dentição funcional está associada ao comprometimento das funções bucais entre adultos brasileiros / The absence of functional dentition is associated with the lack of commitment to oral functions among Brazilian adults

Resumo Objetivou-se identificar se a falta de dentição funcional (DF) está associada com o comprometimento das funções bucais/atividades diárias entre adultos brasileiros. Para isto, foram utilizados dados da Pesquisa Nacional de Saúde Bucal - SB Brasil 2010. A DF foi avaliada pelo critério proposto pela Organização Mundial de Saúde (pelo menos 20 dentes na boca). O instrumento Impactos Odontológicos nos Desempenhos Diários (IODD) foi utilizado para avaliar as atividades diárias/funções bucais. Análises descritivas, bivariadas (Qui-quadrado) e múltiplas (Regressão Logística) foram realizadas, sendo estimado o odds ratio e o intervalo de confiança 95% (OR/IC95%). Foram incluídos e avaliados 9564 adultos. Foram considerados sem DF 2200 adultos (20,5%). Tiveram impacto em pelo menos uma das atividades diárias/funções bucais avaliadas, 55,0% dos adultos. A falta de DF entre adultos foi associada (p ≤ 0,05) com o impacto na fala (1,88/1,33-2,64) e vergonha ao sorrir ou falar (1,35/1,00-1,83). Uma prevalência considerável de falta de DF foi identificada, esta ausência foi associada às atividades diárias/funções bucais (fala e vergonha ao sorrir e falar). A reabilitação dentária de pacientes sem DF deve considerar a devolução destas funções bucais perdidas (fala e vergonha ao sorrir ou falar).

Abstract The scope of this study was to identify if the absence of functional dentition (FD) is associated with a lack of commitment to oral functions/daily activities among Brazilian adults. For this purpose, data from the National Survey of Oral Health (referred to as SB Brasil 2010) was used. FD was evaluated by the criterion proposed by the WHO (at least 20 teeth in the mouth). The Oral Impacts on Daily Performance (OIDP) questionnaire was used to evaluate daily activities/oral functions. Descriptive, bivariate (chi-squared) and multiple (logistic regression) analysis was conducted, and the odds ratio estimated with a 95% confidence interval (OR/CI95%). The research evaluated 9,564 adults, of which 2,200 adults (20.5%) were considered to have poor FD, and at least one of the daily activities/oral functions evaluated had an impact among 55% of adults. The lack of FD between adults was associated (p ≤ 0.05) with the impact on speech (1.88/1.33-2.64) and being ashamed to smile or talk (1.35/1.00-1.83). A considerable prevalence of lack of FD was identified, this absence being associated with the lack of commitment to the daily activities/oral functions. Dental rehabilitation of patients with a lack of FD should consider the restoration of these lost oral functions (speech and being ashamed to smile or talk).

Single-retainer resin-bonded fixed dental prostheses as an alternative to orthodontic space closure (and to single-tooth implants).

This article describes single-retainer resin-bonded fixed dental prostheses (RBFDPs) as an excellent alternative to orthodontic space closure or tooth replacement with implants or conventional fixed dental prostheses for congenitally and traumatically missing anterior teeth. Although the treatment with RBFDPs is technique sensitive, it is extremely reliable given a correct indication and adequate adhesive procedures.

Status of Tooth Loss and Denture Restoration in Chinese Adult Population: Findings from the 4th National Oral Health Survey.

OBJECTIVE: To investigate the status of tooth loss and denture restoration in Chinese adults, analyse the changing trend and provide fundamental data for oral health policy. METHODS: According to the protocol of the 4th National Oral Health Survey, a multistage stratified random cluster-sampling method was used to enrol adult subjects aged 35 to 44, 55 to 64 and 65 to 74 years in all 31 provinces, municipalities and autonomous regions of the mainland of China. The status of tooth loss and denture restoration was investigated. SPSS20.0 software was used for statistics analysis. RESULTS: Among the 13,464 subjects investigated, 13.8% had complete dentition, 84.4% had dentition defects, and 1.8% was edentulous. Urban subjects showed a significantly higher proportion of complete dentition than those in rural (P = 0.02), and males showed the statistically higher proportion of complete dentition than females (P = 0.01). The mean of remaining teeth was 26.1 ± 6.90, which in urban areas was significantly higher than in rural areas (P < 0.01). The means of remaining teeth were 29.6 ± 2.3, 26.3 ± 6.1, and 22.5 ± 8.7 in the 35 to 44, 55 to 64 and 65 to 74 age groups, respectively. The detection rate of fixed partial dentures (FPD) was statistically higher in urban than in rural areas and in males than that in females (P < 0.01). The detection rate of removable partial dentures (RPD) was statistically higher in urban areas than in rural locations (P < 0.01). However, the detection rates of irregular denture and unrepair of tooth loss were both significantly lower in urban than in rural areas (P < 0.01). The rate of restoration of tooth loss was 41.6% in Chinese adults. CONCLUSION: Although the tooth loss and denture restoration status recorded in the survey was improved compared with the results of 10 years ago, more efforts need to be made on strengthening oral health promotion, particularly for elderly people and those living in rural areas.

Effect of dietary counselling with prosthetic restoration on fruit and vegetable intake in partially dentate patients: A prospective study.

The aim of this study was to investigate the effects of a counselling-based dietary intervention on nutritional status in partially dentate patients receiving removable partial dentures (RPDs). Thirty-eight patients [mean age (standard deviation): 73.2 (7.7) years] who were scheduled to receive RPDs at a dental hospital and were currently eating <350 g of vegetables per day were included in the study. A dentist provided basic dietary counselling aimed at increasing dietary fruit and vegetable intake and improving dietary habits. Patients received dietary counselling directly after treatment with new RPDs and at 1 week after a 1-month follow-up evaluation (T1). Food intake was assessed via a validated brief-type self-administered diet history questionnaire, and carotenoids and vitamin C in 6-hour fasting blood samples were measured before RPD administration, and at 1 (T1) and 3 months (T3) thereafter. Vegetable but not the fruit intake increased significantly at T1 and T3 compared to before treatment. Alpha carotene significantly increased at T3 while ß significantly increased both at T1 and T3 compared to before treatment (P < .05). The number of occlusal units on natural teeth was significantly positively associated with increased vegetable and ß-carotene intake (P < .05). Serum carotenoids and vitamin C levels measured with 6-hour fasting blood samples remained constant. These results suggest that basic dietary counselling may improve vegetable intake in partially dentate patients receiving RPD treatment, but did not lead to haematological changes. The presence of occlusion of remaining posterior teeth may be critical for improving vegetable intake.

Patients' Knowledge and Perceived Barriers toward Replacement of Missing Teeth among Respondents of Hail City, Kingdom of Saudi Arabia.

AIM: Teeth maintain the functionality and esthetic of oral cavity, they are also important for psychological and social well-being. This study aims to assess awareness of patients toward replacement of missing teeth. People with unrestored or missing teeth tend to have poor self-esteem and oral health-related quality of life; hence, their knowledge toward restoring and replacing teeth is an important aspect to be measured. MATERIALS AND METHODS: It was an observational study having a cross-sectional design. Face- and content-validated questionnaire was used as study tool. Nonprobability, convenient sampling technique was employed that yielded information from 183 respondents residing in various areas of Hail city. Data were collected after written informed consent. The study was approved by the University of Hail ethical committee. RESULTS: Two hundred questionnaires were distributed, out of which 183 were returned. Regarding knowledge of restoring missing teeth, 145 (79.2%) respondents know that function and esthetic can be maintained by replacing missing teeth. Information about the availability of various types of prosthesis was mostly obtained by them through their dentist (70; 48.3%), while books/magazines/Internet was the second source (38; 26.2%) and 37 (25.5%) heard it from someone who has already undergone the replacement of teeth. CONCLUSION: The present study indicated that a good number of respondents have the knowledge of teeth replacement, and dentists were the most common source of information to the patients in terms of education about different treatment options. CLINICAL SIGNIFICANCE: Evaluate and plan treatment options based on patients' expectations and perceptions.

All-ceramic inlay-retained fixed dental prostheses for replacing posterior missing teeth: A systematic review.

PURPOSE: To evaluate the current status of all-ceramic inlay-retained fixed dental prostheses (CIR-FDPs) for the replacement of posterior teeth. STUDY SELECTION: Screening of titles and abstracts, full-text analysis for inclusion eligibility, quality assessment, data extraction and evaluation of the scientific evidence were performed independently by two reviewers. The electronic databases MEDLINE/PubMed, EMBASE, Cochrane Central Register of Controlled Trials, and Compludoc were searched with no restriction to publication date or language. The quality of the studies was evaluated through: the original 'QDP' ('Questionnaire for selecting articles on Dental Prostheses') (for research papers); the 'Guidelines for managing overviews' of the Evidence-Based Medicine Working Group (for reviews); the Cochrane risk of bias tool; and the GRADE scale for grading scientific evidence. RESULTS: This review started with 4942 articles, which were narrowed down to 23 according to the selection criteria. The data was not statistically treated because of the heterogeneity of the studies. Zirconia-based CIR-FDPs may be recommended for restoring posterior single missing teeth, although the prosthesis/tooth bonded interface has yet to be improved. The addition of lateral wings to the classical inlay preparation seems promising. The weakest parts of CIR-FDPs are the connectors and retainers, while caries and endodontic problems are the most common biological complications. The fabrication of CIR-FDPs with monolithic zirconia may eliminate chipping problems. CONCLUSIONS: A three-unit CIR-FDP is a viable treatment option for replacing a posterior missing tooth. Appropriate case selection, abutment preparation and luting procedures may be decisive for clinical success.

Full-Mouth Rehabilitation with Calvarium Bone Grafts and Dental Implants for a Papillon-Lefèvre Syndrome Patient: Case Report.

Papillon-Lefèvre syndrome (PLS) is a rare autosomal recessive disorder of keratinization associated with palmoplantar keratoderma and severe periodontitis resulting in complete edentulism in late adolescence. The pathognomonic dental features of PLS are pathologic migration, hypermobility, and exfoliation of the teeth without any signs of root resorption. It has been suggested that an effective way to treat PLS patients presenting early in the disease progression is extraction of the erupted primary dentition or hopeless permanent teeth followed by antibiotic coverage with periodontal therapy for the remaining teeth. Unfortunately, studies have shown that this regimen only temporarily delays the progression of periodontal disease and does not prevent further tooth loss and bone destruction in the long term. Post-tooth loss, atrophic ridges make conventional prosthodontic rehabilitation quite challenging, and more recently, implant-supported prostheses have been considered as a viable alternative. In a PLS patient, implant placement is complicated by inadequate bone volume; thus, bone augmentation techniques or the use of short implants is often considered. When large volumes of bone are required, parietal calvarium bone can be used to predictably reconstruct severe defects. A PLS patient aged 21 years presented a chief complaint of ill-fitting conventional complete dentures. The patient had severely atrophic ridges, requiring significant bone augmentation for an implant-supported prosthesis. The present case is the first example of bone augmentation using autogenous calvarium parietal graft followed by endosseous implant placement and prosthetic restoration in a PLS patient.

Ten-year outcome of zirconia ceramic cantilever resin-bonded fixed dental prostheses and the influence of the reasons for missing incisors.

OBJECTIVES: This clinical study evaluated the long-term outcome and survival rate of all-ceramic cantilever resin-bonded fixed dental prostheses (RBFDPs) made of zirconia-ceramic with a single-retainer design to replace missing incisors. In addition, whether the reason for missing incisors has an influence on the longevity of RBFDPs was analyzed. MATERIALS AND METHODS: One hundred and eight zirconia ceramic cantilever RBFDPs were provided for 87 patients. Seventy-five RBFDPs replaced maxillary incisors and 33 mandibular incisors. The restorations were subsequently categorized into 3 groups according to the reasons for missing teeth (congenitally missing, trauma and other reasons). The patients were followed up annually, and the restorations were assessed for function and aesthetics. The mean observation time of the RBFDPs was 92.2±33months. RESULTS: Six debondings and 1 loss of restoration were recorded. The lost restoration was removed at the patient's request after a small chip occurred on the mesial edge of the pontic. Three of the 6 observed debondings were caused by traumatic incidents. All debonded RBFDPs were rebonded successfully with no further complications. Zirconia ceramic RBFDPs yielded a 10-year survival rate of 98.2% and a success rate of 92.0%. CONCLUSIONS: Anterior zirconia ceramic cantilever RBFDPs provided excellent clinical longevity. The reasons for missing incisors did not influence the longevity of the cantilever RBFDPs.