PURPOSE: The purpose of this report is to show three cases treated by an intergrated periodontal and restorative dentistry approach. METHODS: Three patients with Miller Class I gingiva recessions associated with cervical lesions were enrolled for treatment. Two patients received a connective tissue graft and resin modified glass ionomer, and one patient was treated with a connective tissue graft, resin restoration. Keratinized gingiva and relative gingival recession were measured. RESULTS: The mean reduction of relative gingival recession was 3.7 mm, and the mean keratinized gingiva increase was 2.5 mm. The percentage of root coverage was 80% in average. No signs of gingival inflammation or bleeding on probing were seen. The patients were satisfied with the final esthetics and had no more dentin hypersensitivity. CONCLUSIONS: This report indicates that teeth with Miller Class I gingival recession associated with cervical lesions can be successfully treated by a connective tissue graft combined with restorative dentistry. However, longitudinal randomized controlled clinical trials must be performed to support this approach.
Acrylic Resins ; Connective Tissue ; Dentin Sensitivity ; Dentistry ; Esthetics ; Gingiva ; Gingival Recession ; Glass ; Glass Ionomer Cements ; Hemorrhage ; Humans ; Inflammation ; Keratins ; Silicon Dioxide ; Tooth ; Tooth Abrasion ; Transplants

PURPOSE: The purpose of this study is to evaluate the long term clinical and radiographic outcome and stability after transplantation of third molar with complete root formation. METHODS: The subjects were 31 teeth (male 17, female 14, aged 22-55, average 39.9 yr old) of 31 patients who visited the department of periodontics and passed more than two years after autotransplantation procedure and still under regular check up. Modified success criteria of Chamberlin and Goerig was applied to determine the success of autotransplantation. RESULTS: Three out of 31 teeth failed and resulted 90.3% of success rate. When compared according to sex, 15 out of 17 teeth had succeeded in male, 13 out of 14 succeeded in female. When compared the success rate according to cause of extraction, tooth loss due to caries and root fracture had all succeeded but 3 out of 24 had failed in tooth loss due to periodontal disease. When compared according to donor teeth, 12 out of 14 maxillary third molars and 16 out of 17 mandibular third molars had succeeded. CONCLUSIONS: In long term evaluation over two years, if appropriate surgical procedure and proper case selection is made, autotransplantation of the third molar with complete root formation can be the alternative choice that substitutes prosthetic or implant treatment and it is a functionally acceptable procedure.
Aged ; Female ; Humans ; Male ; Molar, Third ; Periodontal Diseases ; Periodontics ; Tissue Donors ; Tooth ; Tooth Extraction ; Tooth Loss ; Transplants

PURPOSE: The palatogingival groove is a developmental anomaly of the incisor teeth, which often presents severe localized periodontal disease. The purpose of this study was to evaluate the clinical outcome of palatogingival groove-associated periodontal lesion following flap operation with glass ionomer filling. METHODS: Four patients with periodontal lesion associated with the palatogingival groove were chosen for this case study. Clinical indices were taken and radiographic exam was performed at the baseline of the study and four patients were treated by flap operation with GI filling. Post-surgical visits were scheduled at regular intervals to check clinical and radiographic changes. RESULTS: Symptoms and signs of periodontal lesion were almost completely resolved with improvement of periodontal indices CONCLUSIONS: Flap operation with direct glass ionomer restoration is thought to be an acceptable method which can produce favorable results in the treatment of periodontal lesion caused by palatogingival groove on the maxillary lateral incisor.
Acrylic Resins ; Glass ; Glass Ionomer Cements ; Humans ; Incisor ; Periodontal Diseases ; Periodontal Index ; Silicon Dioxide ; Tooth ; Tooth Abnormalities

PURPOSE: The presented study aims to evaluate the effects of osteoporosis on dental implants by analyzing a 12-year cumulative survival rate of implants placed in patients with osteoporosis. METHODS: 37 patients with history of osteoporosis were selected from a pool of dental implant patients treated at the Department of Periodontology in Yonsei University Hospital between 1993 and 2007. The cumulative survival rate is quantified using data collected from 164 placed implants in the selected 37 patients. RESULTS: 3 out of the 164 implants failed and the cumulative survival rate was observed at 95.1%. The survival rates of the implants according to patients' age were 97.41% (<60) and 100% (60< or =. The lower survival rate was directly proportional to younger age, and this relationship is statistically significant (P<0.05). The survival rates of implants according to diagnostic criteria were 95.45% (osteopenia) and 98.59% (osteoporosis; 2 out of 142 implants placed in osteoporosis patients failed). The difference in the two survival rates is statistically significant (P<0.05). The survival rates according to the region of implants do not have statistically significant difference. The survival rates according to the different length and diameter of the implants do not have statistically significant difference. The survival rates of implants accompanied and not accompanied by bone augmentation were 92.11% and 100%, respectively. The difference in the two survival rates is statistically significant (P<0.05). The survival rates of implants placed in patients with and without history of medication for osteoporosis treatment are 96.67% and 99.04%, respectively. The difference in the two survival rates is statistically significant (P<0.05). CONCLUSIONS: A high cumulative survival rate of dental implants, similar to one found in non-osteoporosis patients, is observed in osteoporosis patients, indicating the possibility that placing dental implants on patients with osteoporosis can be considered with high treatment predictability.
Dental Implants ; Humans ; Osteoporosis ; Retrospective Studies ; Survival Rate

PURPOSE: This study was performed to evaluate the effect of powered toothbrush with a wireless remote display on the subjective and objective oral hygiene improvement. METHODS: One hundred and fifteen subjects in healthy or mild gingivitis status between the ages of 20 and 90 were recruited and reviewed for study inclusion criteria. At first visit, 115 pre-screened subjects filled in the questionnaire form which consisted of demographic factors, behavioral factors (smoking, alcohol consumption), toothbrushing habits (brushing time and frequency), self-reported oral health status, and self-satisfaction. Baseline clinical indices (Plaque index, Gingival index) were also recorded by a periodontist. Subjects were instructed how to use powered toothbrush with a wireless remote display, and were provided with it. Thirty days after first visit, 90 subjects returned for the second assessment by self-reported questionnaire form and professional clinical checkup. Statistical analysis was performed using paired t-test for the difference between baseline and second visit data. The relationship among variables was examined with chi-square test and Fisher's exact test. RESULTS: Significant differences were not found on self-reported satisfaction related with sex, smoking, alcohol consumption (P<0.05). Self-reported tooth brushing habit was improved in the aspect of brushing time and frequency. Significant differences were found on the self-reported oral health status, self-satisfaction, and clinical indices between the baseline and second visit data (P<0.01). Clinical indices were significantly reduced after using powered toothbrush with a wireless remote display (P<0.01). No adverse reactions were reported during the study period. CONCLUSIONS: Powered toothbrush with a wireless remote display successfully promoted oral hygiene from the subjective and objective viewpoint after 30 days of home usage.
Alcohol Drinking ; Demography ; Gingivitis ; Oral Health ; Oral Hygiene ; Periodontal Index ; Personal Satisfaction ; Surveys and Questionnaires ; Smoke ; Smoking ; Tooth ; Toothbrushing

PURPOSE: This article is purposed to present the correct statistic method by pointing out the statistical errors after analyzing the method of articles that were published in Korean Academy Journal of Periodontology and made statistic processes in them. METHODS: 488 science papers which being put in Korean Academy Journal of Periodontology published from 2000 to 2006 was divided according to year. RESULTS: In the 308 articles that applied statistic methods, 59 articles (50.0%), the largest portion of all, were included the case that applied incorrect parametric statistic method when needed to apply parametric statistics and 38 articles (32.2%) were included in the case that applied incorrect parametric statistic method when needed to apply non-parametric statistics. CONCLUSIONS: It is necessary to present the cases of inappropriate statistical methods in order to improve the quality of academic researches. Also, to apply adequate methods of statistics, it is suggested to report the articles periodically which are comparing and analyzing the statistical methods that are applied in the international articles in periodontal field.

PURPOSE: The purpose of this study was to quantify and compare the expressions of CRP and M-CSF in the gingival tissues of the patients with chronic periodontitis associated to hypertension. METHODS: Gingival tissue samples were obtained during periodontal surgery or tooth extraction. Clinically healthy gingival tissue samples from systemically healthy 12 patients were categorized as group 1 (n=12). Inflammatory gingival tissue samples from patients with chronic periodontitis were categorized as group 2 (n=12). Inflammatory gingival tissue samples from patients with chronic periodontitis associated with hypertension were categorized as group 3 (n=12). Tissue samples were prepared and analyzed by Western blotting. The quantification of CRP and M-CSF were performed using a densitometer and statistically analyzed by one-way ANOVA followed by Tukey test. RESULTS: There were significant differences between group 1 and group 2 and between group 1 and group 3 in both CRP and M-CSF. The differences between group 2 and group 3 were not statistically significant in both proteins. However, the expression levels of CRP and M-CSF in hypertensive inflammatory gingiva showed increased tendency compared to non-hypertensive inflammatory gingiva. CONCLUSIONS: It is suggested that CRP and M-CSF might be used as inflammatory and bone resorption markers in periodontal diseased tissue. It is assumed that hypertension may be associated with the progression of periodontal inflammation and alveolar bone resorption.
Blotting, Western ; Bone Resorption ; C-Reactive Protein ; Chronic Periodontitis ; Gingiva ; Humans ; Hypertension ; Inflammation ; Macrophage Colony-Stimulating Factor ; Macrophages ; Proteins ; Tooth Extraction

PURPOSE: In this study we evaluated the morphologic aspects of defects created by a piezoelectric ultrasonic scaler with scaler tip on casting gold alloy using scanning electron microscope (SEM) images and defect surface profiles. METHODS: 54 blocks of type III casting gold alloy (Firmilay, Jellenko Inc, CA, USA) were scaled by a piezoelectric ultrasonic scaler (P-MAX, Satelec, France) with scaler tip (No. 1 tip) on a sledge device. 2-dimensional profiles of defects on all samples were investigated by a surface profilometer (a-Step 500, KLA-Tencor, CA, USA). The selected working parameters were lateral force (0.5 N, 1.0 N, 2.0 N), mode (P mode, S mode), and power setting (2, 4, 8). SEM images were obtained. Defect surface profiles were made on Microsoft Excel program using data obtained by a surface profilometer. RESULTS: Among P mode samples, there were similarities on defect surface profiles and SEM images regardless of lateral force. The defects created in P mode were narrow and shallow although the depth and the width increased as power setting changed low (2) to high (8). In P mode samples, the defect depth was the greatest when lateral force of 0.5 N was applied. However all the depths were smaller than 1 m. SEM images of Lateral force of 0.5 N, S mode, power setting 2 and 4 were similar to that of P mode, but the other SEM images of S mode showed discernible changes. Defect depth of S mode samples was the greatest when lateral force of 1.0 N was applied. CONCLUSIONS: Within the limitations of this study, it can be concoluded that removing capability of piezoelectric scaler with scaler tip becomes maximized as power level becomes higher but the capability is restricted when excessive lateral force is applied on scaler tip.
Alloys ; Dental Equipment ; Electrons ; Gold Alloys ; Ultrasonics

PURPOSE: The purpose of this study was to investigate the ability of Mineral trioxide aggregate(MTA) to support osteoclastic differentiation from fetal rat calvarial cell. METHODS: In this study, response of IL-6, RANKL, and OPG in fetal rat calvarial cells stimulated with IL-1beta on MTA was evaluated by ELISA and RT-PCR. RESULTS: The results were as follows; there was no significant difference between glass and MTA at 5days. In ELISA analysis, Glass group and MTA group showed similar IL-6 expression, Glass+IL-1beta group and MTA+IL-1beta group showed similar IL-6 expression. In RT-PCR analysis, Glass group and MTA group showed similar IL-6, RANKL, OPG mRNA expression, MTA+IL-1beta group and Glass+IL-1beta group showed 3 fold increase of IL-6 and RNAKL mRNA expression when compared with MTA group. All groups showed similar OPG mRNA expression. CONCLUSIONS: MTA does not suppress cell proliferation and increase the proinflammatory cytokine that induce osteoclastogenesis. Thus, MTA is biocompatible material that could be used in various clinical conditions.
Aluminum Compounds ; Animals ; Biocompatible Materials ; Calcium Compounds ; Cell Proliferation ; Cytokines ; Drug Combinations ; Enzyme-Linked Immunosorbent Assay ; Glass ; Glutamates ; Guanine ; Interleukin-6 ; Osteoclasts ; Oxides ; Rats ; RNA, Messenger ; Silicates ; Pemetrexed

PURPOSE: This study was aimed to evaluate the effect of the Freeze Dried Bone Allograft and Demineralized Bone Matrix on osseous regeneration in the rat calvarial defects. METHODS: Eight mm critical-sized calvarial defects were created in the 80 male Sprague-Dawley rats. The animals were divided into 4 groups of 20 animals each. The defects were treated with Freeze Dried Bone Allograft(SureOss(TM)), Demineralized Bone Matrix(ExFuse(TM)Gel, ExFuse(TM)Putty), or were left untreated for sham-surgery control and were evaluated by histologic and histomorphometric parameters following a 2 and 8 week healing intervals. Statistical analysis was done between each groups and time intervals with ANOVA and paired t-test. RESULTS: Defect closure, New bone area, Augmented area in the SureOss(TM), ExFuse(TM) Gel, ExFuse(TM) Putty groups were significantly greater than in the sham-surgery control group at each healing interval(P<0.05). In the New bone area and Defect closure, there were no significant difference between experimental groups. Augmented area in the ExFuse(TM) Gel, ExFuse(TM) Putty groups were significantly greater than SureOss(TM) group at 2weeks(P<0.05), however there was no significant difference at 8 weeks. CONCLUSIONS: All of SureOss(TM), ExFuse(TM) Gel, ExFuse(TM) Putty groups showed significant new bone formation and augmentation in the calvarial defect model.
Alveolar Bone Loss ; Animals ; Bone Matrix ; Bone Regeneration ; Bone Transplantation ; Humans ; Male ; Osteogenesis ; Rats ; Rats, Sprague-Dawley ; Regeneration ; Transplantation, Homologous