INTRODUCTION: Mini-implant system is applicable to areas of narrow space and area requiring temporary loading support. The purpose of this study was to evaluate the clinical outcome of a mini-implant system as well as the application of mini-implant system in the dental clinical field. MATERIALS AND METHODS: The patients who had been operated from Jan 2007 to Dec 2007 in the four dental facility including Seoul National University Bundang Hospital were enrolled. To evaluate the factors associated with the clinical outcome, the patients were classified according to gender, age, area of surgery, type of implant, diameter and length of the implant, and the purpose of the mini-implant system application. RESULTS: From 147 implants, only three implants failed, one of them was for temporary loading. There were no serious surgical or prosthetic complications in this study. CONCLUSION: An analysis of the preliminary data revealed a satisfactory clinical outcome. However, more long-term evaluation of narrow ridge type as well as the patient's satisfaction on the use of a provisional type mini-implant system is needed.
Dental Facilities ; Humans ; Retrospective Studies

PURPOSE: The purpose of this study was to evaluate Cardiopulmonary Resuscitation ability and level of knowledge among certain dental hygienists in Seoul and Gyeonggi-do. METHODS: We surveyed ability and knowledge of CPR among dental hygienists working at dental offices and dental hospitals located in Soul and Gyeonggi-do from September 18, 2010 to October 16, 2010. Data acquired from dental hygienists who had completed the questionnaire that we designed were used in the analysis. Uni- and bi-variate analysis and Chi-square test were performed using SAS 9.2. RESULTS: According to our findings, among respondents, approximately 14.29% of dental hygienists had a CPR license. Their CPR licenses are affected by working period, job position, and level of education (p<.05). Factors including working period, type of CPR license, and CPR license renewal were indicators of CPR knowledge level (p<.05). Significant differences were observed among dental hygienists with regard to subjective CPR abilities, which is dependent on obtaining a CPR license, CPR knowledge level, and education channel for CPR (p<.05). CONCLUSION: CPR ability and knowledge level among dental hygienists were not sufficient to save emergency people in the dental clinic. In order to save emergency patients patients, implementation of a CPR education and renewal program for dental hygienists is recommended.
Cardiopulmonary Resuscitation ; Surveys and Questionnaires ; Dental Clinics ; Dental Hygienists ; Dental Offices ; Emergencies ; Humans ; Licensure ; Phenothiazines ; Resuscitation

OBJECTIVES: This cross-sectional study was performed in the Dental School of Prince of Songkla University to ascertain noise exposure of dentists, dental assistants, and laboratory technicians. A noise spectral analysis was taken to illustrate the spectra of dental devices. METHODS: A noise evaluation was performed to measure the noise level at dental clinics and one dental laboratory from May to December 2010. Noise spectral data of dental devices were taken during dental practices at the dental services clinic and at the dental laboratory. A noise dosimeter was set following the Occupational Safety and Health Administration criteria and then attached to the subjects' collar to record personal noise dose exposure during working periods. RESULTS: The peaks of the noise spectrum of dental instruments were at 1,000, 4,000, and 8,000 Hz which depended on the type of instrument. The differences in working areas and job positions had an influence on the level of noise exposure (p < 0.01). Noise measurement in the personal hearing zone found that the laboratory technicians were exposed to the highest impulsive noise levels (137.1 dBC). The dentists and dental assistants who worked at a pedodontic clinic had the highest percent noise dose (4.60 +/- 3.59%). In the working areas, the 8-hour time-weighted average of noise levels ranged between 49.7-58.1 dBA while the noisiest working area was the dental laboratory. CONCLUSION: Dental personnel are exposed to noise intensities lower than occupational exposure limits. Therefore, these dental personnel may not experience a noise-induced hearing loss.
Cross-Sectional Studies ; Dental Assistants ; Dental Clinics ; Dental Instruments ; Dentists ; Hearing ; Hearing Loss, Noise-Induced ; Humans ; Laboratories, Dental ; Laboratory Personnel ; Noise ; Occupational Exposure ; Schools, Dental ; United States Occupational Safety and Health Administration

OBJECTIVES: Traditional nonparametric efficiency analysis was based on the relationship between the quantitative input and output measures. This study performed nonparametric efficiency analysis, which uses the results of dental hospital accreditation with quantitative output measures. METHODS: Data came from 35 hospitals between 2008 and 2010 that participated in the demonstration projects of dental hospital accreditation. The study employed two-stage double bootstrapping (TSDB) method to overcome the shortcomings and biased results of the traditional Data Envelope Analysis (DEA). Input measures included staffs, dental hygienists, other chair-side assistants, and administrative personnel, as well as dental equipment (dental chairs). Production measures were total revenues and the number of patients that visited the participating hospitals. We considered the environmental variables, which would affect the efficiency score of dental hospitals, dental hospital types, accreditation scores, and patients' satisfaction scores. RESULTS: There was a large split between the traditional DEA scores and TSDB scores. A total of 22 out of 35 hospitals had perfect efficiency in the traditional method, but none of those showed 100% efficiency in the TSDB. Overall efficiency score was the highest in the dental facility of general hospitals (71% mean efficiency), and dental teaching hospitals were the lowest (55% mean efficiency score). The factors that affected the efficiency of dental hospitals were the types of the dental hospital and the accreditation score. CONCLUSIONS: Traditional DEA scores had biased estimates and tended to be higher. The study found that organizational efforts for improving service qualities and patient safety would affect the efficiency, as well as the accreditation results.
Accreditation ; Administrative Personnel ; Bias (Epidemiology) ; Dental Equipment ; Dental Facilities ; Dental Staff ; Hospitals, General ; Hospitals, Teaching ; Humans ; Patient Safety ; Porphyrins

OBJECTIVETo investigate the relationship between the uncooperative behaviors of first-visit-dental children and correlative factors that include children's temperament, severe of dental caries and so on in order to help dentists to make personal dentistry therapy plan for each child to prevent and deal with children's uncooperative behaviors.

METHODSFrom the pediatric dentistry clinic, 195 first-visit-dental children (aged 3-7 years) from Dec. 2007 to Dec. 2008 were randomly selected to accept dental examination and accepted corresponding treatment according to personal therapy plans. Children's clinic behavior was valued during treatment. The parents were asked to complete NYLS temperament parents scale questionnaires for 3-7 years old children.

RESULTSAmong the 195 children, there were 114(58.46%) had dental fear and anxiety(DFA) and 66 (33.85%) had dental behavior management problem (DBMP). As the children's age increased, the incidence of DBMP decreased. There were no statistical relationship between genders and children's DFA/DBMP. The children's severity of dental caries was related to their dental behavior, the more serious the caries, the more incident the DFA/DBMP of children. There were no statistically significant differences for the DFA/DBMP of temperament type children. But the score of sensory threshold was higher in DFA children, while physiological rhythmicity was lower in DBMP, the differences were significant.

CONCLUSIONIn order to reduce the incidence of DFA/DBMP, we should pay more attention to children with serious caries, and provide them individual behavior management for different ages and temperament.

Ambulatory Care Facilities ; Child ; Child Behavior ; Child, Preschool ; Dental Anxiety ; Dental Care ; Dental Caries ; Female ; Humans ; Male

OBJECTIVES: The objectives of this study were to evaluate the effect of smoking on utilization of and expenses in ambulatory dental care. METHODS: The subjects of this study were 5,751 men aged over 20 years selected from the Korea Health Panel data collected during 2010-2012. Pack-years of smoking were calculated based on the survey data. Dental utilization was defined as dental outpatient clinic use least once in three years. The expenses in ambulatory dental care were summed to determine total dental health care spending for three years. To detect the effect of smoking, we used multiple logistic regression analysis for dental utilization and multiple linear regression for expenses in ambulatory dental care after changing log. RESULTS: The pack-years had a significant effect on dental utilization and expenses in participants aged 40-59 years. After controlling for income level, bedtime brushing, and the presence of chronic disease, dental care utilization rates in the over 10 to less than 25 pack-year and the over 25 pack-year groups were about 1.4 (OR=1.37, (P =0.007)) and 1.6 times (OR=1.59, (P =0.001)) those in the 0 pack-year group. In comparison with the 0 pack-year group, the over 10 to less than 25 pack-year group spent 50,000 won more over dental expenses, while the corresponding number for the over 25 pack-year group was about 100,000 won. Thus, the ambulatory dental care expenses increased with the packyears of smoking. CONCLUSIONS: Smoking significantly influenced the utilization and expense in ambulatory dental care in men aged 40-59 years.
Ambulatory Care Facilities ; Chronic Disease ; Delivery of Health Care ; Dental Care* ; Humans ; Korea ; Linear Models ; Logistic Models ; Male ; Smoke* ; Smoking*

OBJECTIVETo study the preventive effects of fluoride drop on dental caries for children.

METHODSThe comparative method was carried out in 1 200 children aged from 3 to 4. The subjects were divided into three groups: fluoride drop group, fluoride toothpaste group and control group. The research period was 2 years.

RESULTSThe results demonstrated that new dfs was 1.35 +/- 0.57 in the fluoride drop group after one year, 1.85 +/- 0.57 after two years. The new dfs was 1.53 +/- 1.09 in the fluoride toothpaste group after one year and 2.75 +/- 1.33 after two years. There was no significant difference of the dfs reduction between fluoride drop and toothpaste group.

CONCLUSIONFluoride drop is effective in the prevention of dental caries in Chinese kindergarten and primary school children.

Ambulatory Care Facilities ; Cariostatic Agents ; therapeutic use ; Child ; DMF Index ; Dental Caries ; prevention & control ; Female ; Fluorides ; therapeutic use ; Humans ; Male ; Tooth, Deciduous ; Toothpastes

ABSTRACT This study aims to evaluate the optimum duration of flushing dental unit waterlines (DUWLs) in Universiti Sains Islam Malaysia (USIM) dental polyclinics for removal of heterotrophic bacteria. Water samples were obtained from triple air syringes at each dental chair from oral surgery clinic, outpatient clinic and polyclinic 17 at Faculty of Dentistry, USIM after 16 and 64 hours of not operating the dental units as baseline samples. This is followed by sampling after continuous flushing at 30 seconds, 1 minute, 2 minutes and 3 minutes of flushing duration. The levels of heterotrophic plate count (HPC) for each flushing duration were determined by quantification of colony forming units (CFUs) after cultivation of samples on plate count agar (PCA), R2A agar and 5% sheep blood agar (SBA). Statistically, there was no significant reduction in CFUs of HPC for all flushing duration compared to baseline (P > 0.05) with the most notable HPC reducing level after 1 minute and 3 minutes of flushing DUWLs. However, HPC level at USIM dental clinics is still exceeding the recommendation by Centers for Disease Control and Prevention (CDC) which should be less than 500 CFU/mL. The existing method of controlling DUWLs contamination in USIM dental clinics is only by flushing DUWLs 1 minute every morning prior to dental treatment as recommended by Malaysian Dental Council (MDC) without the use of chemical germicides. Thus, the flushing method alone is not reliable to reduce the number of microorganisms in the DUWLs.
Dental Clinics ; Biofilms

PURPOSE: The purpose of this study was to measure the tightening torque for dental implant in dental laboratory and to analyze of the effects of different tightening torque. MATERIALS AND METHODS: The tightening torque for dental implant in dental laboratory were measured by digital torque gauge. The length of abutment and analog were measured as tightening torque of manufacturer's instructions and the measured value. And the data were statically analyzed. RESULTS: The mean tightening torque of implant screw in dental laboratory was 1.563 +/- 0.332 Ncm. The external type implant system of total length were showing no significant differences but the internal type implant system had difference significant (P < 0.05) when compared with tightening torque. CONCLUSION: The implant prosthesis should be made under manufacturer's instructions especially as tightening torque of screw. For the fidelity of implant prosthesis, dental technician should learn how to use the torque gauge.
Dental Implants ; Dental Prosthesis ; Dental Technicians ; Humans ; Laboratories, Dental* ; Prostheses and Implants ; Torque*

The dental profession is currently experiencing a technology explosion. Processes are being replaced by modern, inexpensive, and precise techniques that can be used to solve complex restorative problems. Electrical discharge machining (DEM, known as spark erosion in Europe) is a nonconventional, industrial technique that has application in dentistry. EDM may be defined as a metal removal process using a series of sparks to erode material from a workpiece in a liquid medium under carefully controlled conditions. EDM is recently adopted in the dental laboratory to fabricate precision attachments, hybrid telescope crowns, Ti-ceramic crowns. EDM has also been used to achieve a passive precision metalto-metal fit between the substructure bar and the removable superstructure and to correct the fit of implant retained restorations. in this article, a brief history and explanation of EDM is discussed and a description of the use of this process for fabricating attachments and crowns or for correcting the fit of cast restorations is presented.
Crowns ; Cytochrome P-450 CYP1A1 ; Dentistry ; Explosions ; Laboratories, Dental ; Telescopes