The fire broke out in the cold storage warehouse in Icheon, Gyeonggi-do, Korea on January 7th, 2008 and forty workers were died from the fire. Dental identification was carried out to the 25 victims among the 40 ones. The five remains were identified through dental approaches. The public ignorance about the importance of forensic odontology and the difficulty procuring antemortem dental records from the families of the victims were kind of hardships to use the victim's previous dental information. The availability of antemortem data was 12.5%. The public realization about the importance of dental identification and building-up an appropriate co-work system between relevant organizations are required to collect antemortem data more efficiently without wasting time.
Cold Temperature ; Dental Records ; Fires ; Humans ; Korea

PURPOSE: The aim of this study was to evaluate the clinical value of Osstem(R) USII plus system implants. Clinical and radiographic data were analyzed for 88 implants placed and functionally loaded for a 12 month period at the Yonsei University Dental Hospital. MATERIALS AND METHOD: Based on the patient's medical records, clinical factors and their effects on implant marginal bone resorption, distribution and survival rate were analyzed. The marginal bone loss was evaluated at implant placement and during a 6 to 12 months functional loading period. The independent sample t-test was used to evaluate the interrelationship between the factors (alpha=0.05), and one way repeated measures ANOVA was used to compare the amount of marginal bone resorption. RESULTS: The cumulative survival rate for 88 implants was 100%. The marginal bone resorption from implant placement to prosthetic delivery was 0.24 mm and the average marginal bone resorption from prosthetic delivery to 12 months of functional loading was 0.19 mm. The total average bone resorption from implant placement to 12 months of functional loading was 0.43 mm. There were no statistically differences in the amount of marginal bone resorption when implants were placed in the maxilla or the mandible (P>.05), however, implants placed in the posterior areas showed significantly more marginal bone loss than those placed in the anterior areas (P<.05). CONCLUSION: Based on these results, the short term clinical success rate of RBM surface treated external connection domestic implants showed satisfactory results and the marginal bone loss was in accord with the success criteria of dental implants.
Bone Resorption ; Dental Implants ; Mandible ; Maxilla ; Medical Records ; Survival Rate

OBJECTIVE: The purpose of this study was to investigate the prevalence of dental anomalies in outpatient clinics. METHODS: The subjects of this study were 3,133 patients who visited the clinic between January 2009 and June 2011. The dental records and panoramic films of the patients and detection of supernumerary, missing, and impacted teeth, transposition, and peg lateralis were reviewed. The results were analyzed according to gender and types and locations of dental anomalies. RESULTS: Among the patients, 362 had dental anomalies, with a prevalence rate of 11.55%. Congenital missing teeth (5.71%) ranked first in the categories, and impacted teeth (3.09%) ranked second. The percentage of patients having supernumerary teeth, peg lateralis, and dislocated teeth were 1.79%, 1.66%, and 0.45%, respectively. CONCLUSIONS: Congenital missing teeth and impacted teeth are, respectively, the first and second most common dental anomalies in Korean dental patients.
Dental Records ; Humans ; Outpatients ; Prevalence ; Tooth ; Tooth, Impacted ; Tooth, Supernumerary

OBJECTIVES: To overcome challenges in the implementation of electronic dental record systems in a low-resource setting, it is crucial to know the level of users’ satisfaction with the existing system of paper-based dental records and their perceptions of electronic dental records. METHODS: A cross-sectional paper-based questionnaire survey was conducted among Myanmar dental professionals who worked in one of two teaching hospitals or in private dental clinics. Descriptive data were analyzed and regression analysis was carried out to identify factors influencing perceptions of electronic dental records. RESULTS: Most dental professionals (>60%) were satisfied with just three out of six aspects of paper-based dental records (familiarity, flexibility, and portability). In addition, generalized positive perceptions were found among decision makers towards electronic dental records, and 86% of dentists indicated that they were willing to use them. Financial concerns were identified as the most important barrier to the implementation of electronic dental records among dentists who were not willing to use the proposed system. CONCLUSIONS: The first step towards implementing electronic dental records in Myanmar should be improvement of the content and structure of paper-based dental records, especially in private dental clinics. Utilization of appropriate open-source electronic dental record software in private dental clinics is recommended to address perceived issues around financial barriers. For the long term, we recommend providing further education and training in health informatics to healthcare professionals to facilitate the efficient use of electronic dental record software in Myanmar in the future.
Delivery of Health Care ; Dental Clinics ; Dental Records* ; Dentists ; Education ; Hospitals, Teaching ; Humans ; Informatics ; Myanmar* ; Pliability

OBJECTIVES: This study aimed to determine the effectiveness of the continuous dental care program of the Community Child Center in Gangneung city by evaluating one-year outcomes and determining the reasons for dropout. METHODS: A total of 180 children in the study group were provided with continuous dental care in 2008. The control group consisted of 131 children whose 2009 dental records from Gangneung-Wonju National University Dental Hospital were retrospectively reviewed. The outcome of dental caries prevention was evaluated by prevalence rates and number of decayed teeth. The evaluation of dental care outcome was based on cost and frequency of dental care. A chi-square test and Mann-Whitney U test were used to assess differences between the study group and the control group. In addition, the dropout rate and the reasons for dropout by the time of dental service supply were investigated for 427 children who participated in this program in 2010. RESULTS: Dental caries prevention results of the study group were better than those of the control group, but significant differences were found only in the dt rates of girls (P<0.001). The average frequency of dental care per child in the study group was lower than that of the control group. The average cost of dental care per child was 56,910 won per boy in the study group, 124,893 won per boy in the control group, 71,657 won per girl in the study group, and 127,296 won per girl in the control group. Significant differences in dental care results were found for both boys and girls (P<0.05). The reasons for dropout were leaving the center, absence, use of another dental clinic, parents' or child's rejection of the program, and disability. CONCLUSIONS: On the basis of these results, we could logically assume that promoting oral health and reducing the cost of dental care might be achieved through the introduction of a continuous dental care program for vulnerable children and adolescents in the community.
Adolescent ; Child ; Dental Care ; Dental Caries ; Dental Clinics ; Dental Records ; Humans ; Logic ; Oral Health ; Patient Dropouts ; Prevalence ; Rejection (Psychology) ; Retrospective Studies ; Tooth

PURPOSE: This study was conducted to compare the cumulative survival rates (CSRs) and the incidence of postloading complications (PLCs) between a bone-level internal connection system (ICS-BL) and an external connection system (ECS). METHODS: The medical records of patients treated with either a ICS-BL or ECS between 2007 and 2010 at Asan Medical Center were reviewed. PLCs were divided into two categories: biological and technical. Biological complications included >4 mm of probing pocket depth, thread exposure in radiographs, and soft tissue complications, whereas technical complications included chipping of the veneering material, fracture of the implant, fracture of the crown, loosening or fracture of the abutment or screw, loss of retention, and loss of access hole filling material. CSRs were determined by a life-table analysis and compared using the log-rank chi-square test. The incidence of PLC was compared with the Pearson chi-squared test. RESULTS: A total of 2,651 implants in 1,074 patients (1,167 ICS-BLs in 551 patients and 1,484 ECSs in 523 patients) were analyzed. The average observation periods were 3.4 years for the ICS-BLs and 3.1 years for the ECSs. The six-year CSR of all implants was 96.1% (94.9% for the ICS-BLs and 97.1% for the ECSs, P=0.619). Soft tissue complications were more frequent with the ECSs (P=0.005) and loosening or fracture of the abutment or screw occurred more frequently with the ICS-BLs (P<0.001). CONCLUSIONS: Within the limitations of this study, the ICS-BL was more prone to technical complications while the ECS was more vulnerable to biological complications.
Chungcheongnam-do ; Crowns ; Dental Implant-Abutment Design ; Dental Implants ; Humans ; Incidence* ; Medical Records ; Retrospective Studies ; Survival Rate

PURPOSE: The aim of this retrospective study is to analyze the relationship between local factors and survival rate of dental implant which had been installed and restored in Seoul Veterans Hospital dental center for past 10 years. And when the relationship is found out, it could be helpful to predict the prognosis of dental implants. MATERIALS AND METHODS: A retrospective study of patients receiving root-shaped screw-type dental implants placed from January 2000 to December 2009 was conducted. 6385 implants were placed in 3755 patients. The following data were collected from the dental records and radiographs: patient's age, gender, implant type and surface, length, diameter, location of implant placement, bone quality, prosthesis type. The correlations between these data and survival rate were analyzed. Statistical analysis was performed with the use of Kaplan-Meier analysis, Chi-square test and odds ratio. RESULTS: In all, 6385 implants were placed in 3755 patients (3120 male, 635 female; mean age 65 +/- 10.58 years). 108 implants failed and the cumulative survival rate was 96.33%. There were significant differences in age, implant type and surface, length, location and prosthesis type (P<.05). No significant differences were found in relation to the following factors: gender, diameter and bone quality (P>.05). CONCLUSION: Related factors such as age, implant type, length, location and prosthesis type had a significant effect on the implant survival.
Dental Implants ; Dental Records ; Hospitals, Veterans ; Humans ; Kaplan-Meier Estimate ; Male ; Prognosis ; Prostheses and Implants ; Retrospective Studies ; Survival Rate

PURPOSE: The purpose of this retrospective study with 4–12 years of follow-up was to compare the marginal bone loss (MBL) between external-connection (EC) and internal-connection (IC) dental implants in posterior areas without periodontal or peri-implant disease on the adjacent teeth or implants. Additional factors influencing MBL were also evaluated. METHODS: This retrospective study was performed using dental records and radiographic data obtained from patients who had undergone dental implant treatment in the posterior area from March 2006 to March 2007. All the implants that were included had follow-up periods of more than 4 years after loading and satisfied the implant success criteria, without any peri-implant or periodontal disease on the adjacent implants or teeth. They were divided into 2 groups: EC and IC. Subgroup comparisons were conducted according to splinting and the use of cement in the restorations. A statistical analysis was performed using the Mann-Whitney U test for comparisons between 2 groups and the Kruskal-Wallis test for comparisons among more than 2 groups. RESULTS: A total of 355 implants in 170 patients (206 EC and 149 IC) fulfilled the inclusion criteria and were analyzed in this study. The mean MBL was 0.47 mm and 0.15 mm in the EC and IC implants, respectively, which was a statistically significant difference (P < 0.001). Comparisons according to splinting (MBL of single implants: 0.34 mm, MBL of splinted implants: 0.31 mm, P=0.676) and cement use (MBL of cemented implants: 0.27 mm, MBL of non-cemented implants: 0.35 mm, P=0.178) showed no statistically significant differences in MBL, regardless of the implant connection type. CONCLUSIONS: IC implants showed a more favorable bone response regarding MBL in posterior areas without peri-implantitis or periodontal disease.
Alveolar Bone Loss ; Dental Implant-Abutment Design ; Dental Implants ; Dental Records ; Follow-Up Studies ; Humans ; Peri-Implantitis ; Periodontal Diseases ; Retrospective Studies ; Splints ; Tooth

Analysis of the cases registered for the Forensic Odontology Lab of the National Forensic Service (NFS) from April 6th, 2007 to December 2010 was performed to observe the trend and pattern of the cases, in order to propose measures for improvement in future cases both in quantity as well as quality. High rate of cases were observed from the capital area, especially in ground and mountains during warmer season from June to October. Most of the cases were of human remains requested and examined for the estimation of age, sex, stature and identification. However, some of the requested criteria were applied forensic methods such as postmortem interval, cause of death, and facial reconstruction which could not be conducted. To better fulfill the needs of the society, reform of the current registration-examination system by introducing a multi-disciplinary team for processing the scene, education of the law enforcement personnel, research and acquiring funds for the relevant areas, developing antemortem dental record database are recommended for improvement in quantity and quality of the information produced by odontology lab.
Cause of Death ; Dental Records ; Financial Management ; Forensic Anthropology ; Humans ; Law Enforcement ; Pyridines ; Research Personnel ; Seasons ; Thiazoles

PURPOSE: The purpose of this retrospective report was to analyze long-term survival rate of sintered porous-surfaced dental implant (Endopore(R) Dental Implant system, Innova Corporation, Toronto, ON, Canada). METHODS: 61 partially edentulous patients were received a total of 127 Endopore dental implants in the maxilla. Of the 127 implants, 24 implants were restored with individual (ie, non-splinted) crowns, while 103 implants were splinted to other implants. Medical records and radiographs were evaluated and analyzed by the cumulative survival rate, location of implants, implants length and diameter, crown/implant ratio and whether the implant was splinted. Chi squire test was used statistically. RESULT: Of the 127 implants, 8 implants (6.3%) were removed and and cumulative survival rate was 93.7%. CONCLUSION: Endopore implants showed satisfactory results after up to 8 years function periods in the edentulous posterior maxilla.
Crowns ; Dental Implants ; Humans ; Maxilla ; Medical Records ; Retrospective Studies ; Splints ; Survival Rate