Survival Rate of CAD-CAM Endocrowns Performed by Undergraduate Students.

OBJECTIVES: This study aimed to evaluate the success of computer-aided design-computer-aided manufacturing (CAD-CAM) endocrown restorations of endodontically treated teeth (ETT) performed by supervised undergraduate students. The study also intended to identify possible factors that may lead to failures. METHODS AND MATERIALS: This observational open cohort study was based on clinical data from endocrown restorations performed by residents and undergraduate students in their 4th, 5th, and 6th year from July 2011 to May 2018. The presence of a tooth with an endocrown on the arch was the main criteria used to calculate the survival rate of restored teeth. The quality of the remaining endocrowns was evaluated referring to the FDI criteria. The cases of failure were categorized into either favorable or unfavorable. RESULTS: A total of 343 ETT were restored with endocrowns in 315 patients. Among them, 199 patients encompassing 225 endocrowns were followed during a 56 ± 26 month period. The survival rate of restored teeth was found to be 81.8%, the estimated Kaplan-Meier survival rate being 71.8% at 9 years. Among the 41 failed cases, 32 were favorable (debonding and/or ceramic fractures) and 9 were unfavorable. CONCLUSION: Endocrown restorations of posterior ETT using CAD-CAM technologies could be carried out by undergraduates with a low risk of failure. Teacher supervision could be reinforced, covering all steps of each endocrown procedure in order to avoid failures due to insufficient thickness or loss of retention.

Evaluation of Cerec endocrowns: a preliminary cohort study.

This study aimed to evaluate clinical qualities and evolution on ceramic endocrowns produced with the Cerec 3D (Sirona). Endocrowns were produced in a hospital environment and evaluated according to the FDI criteria on the day of placement and 6 months afterwards. Each item was graded from 1 (good) to 5 (bad). A global score, as well as a score for aesthetics, functioning and biological integration was assessed for each evaluation. During the 6-month evaluation period, the scores were always related to good clinical quality, except for single crown restoration. The scores did not change between the two periods of evaluation.

Minimal intervention dentistry II: part 3. Management of non-cavitated (initial) occlusal caries lesions--non-invasive approaches through remineralisation and therapeutic sealants.

Epidemiological data on dental caries show that prevention and treatment needs have evolved significantly over the past two decades. In younger patients the distribution of caries lesions is mainly found on the occlusal surfaces. The treatment approaches utilised by dentists must evolve to integrate preventive and treatment solutions tailored to the care needs, which are straightforward to implement in the dental office and whose effectiveness is underpinned by scientific evidence. This article aims to describe the principles of non-invasive management of non-cavitated (initial) occlusal caries lesions, based on evidence from recent studies published in the international literature.

Chewing deficiencies in adults with multiple untreated carious lesions.

Persons who have multiple untreated carious lesions are at high risk of chewing difficulties and consequently an unhealthy diet, but few data are available on the impact of untreated caries on mastication in adults. This study in adults with multiple untreated caries lesions aimed to evaluate chewing deficiencies using physiological and psychosocial indicators. Forty-five patients, mean (±SD) decayed teeth 11.5 (±5.2), and 20 fully dentate caries-free subjects were observed during mastication of raw carrot and two jelly model foods differing in hardness. Criteria for chewing evaluation were carrot bolus granulometry, food refusals, chewing activity (chewing time, number of chewing cycles, chewing frequency) and oral health-related quality of life (GOHAI). Dental status was characterized by caries experience (DMFT) and posterior functional pairs of teeth. Adults with multiple untreated caries lesions suffered from chewing deficiencies, demonstrated by a decrease in food comminution related to the number of posterior functional teeth, food selection and functional alterations in oral health-related quality of life. The ability to adapt chewing activity to food hardness was preserved in this group. Further studies should be conducted to determine whether chewing function could be improved after dental treatment.

A description of oral health in three French jails.

UNLABELLED: Prisoners display many features suggestive of a higher risk of poorer oral health than the general population. They have many risk factors: disadvantaged social background, consumption of psychoactive substances and a high proportion of persons with mental illness. The oral health of prisoners is handled by different care providers such as hospital doctors together with some students, interns, and some dedicated dental practitioners. There are few data describing the outcomes of this activity. OBJECTIVE: The objective of this descriptive study was to determine the oral health of prisoners in the current care system as observed in three French jails. PARTICIPANTS: 84 male prisoners were allocated to two subgroups according to the duration of incarceration: a short-term group (< or = 2 years; 31 subjects, mean age: 31 (sd 13) years) and a long-term group (> 2 years; 53 subjects, mean age: 43 (sd 11) yearss). One investigator performed a semi-guided interview and a dental examination. MAIN OUTCOME MEASURES: The DMFT index, the Global Oral Health Assessment Index, the number of dental functional units and some specific indicators on mastication were collected. RESULTS: Duration of incarceration explained more variability than age for numbers of missing teeth (26%; p < 0.001) and functional units (24%; p < 0.001). Long-term prisoners had greater chewing difficulties than short-term prisoners. CONCLUSIONS: This study suggested that, in the French jails studied, a stable level of oral infection including untreated caries was obtained at the cost of a degraded masticatory function.