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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Dental Rehabilitation and Applied Science
Journal Basic Information
Journal DOI :
Korean Academy of Stomatognathic Function and Occlusion
Editor in Chief :
Volume & Issues
Volume 28, Issue 4 - Dec 2012
Volume 28, Issue 3 - Sep 2012
Volume 28, Issue 2 - Jun 2012
Volume 28, Issue 1 - Mar 2012
Selecting the target year
Clinical Study on the Survival Rate and Marginal Bone Resorption of Short Implants
Myung, Tae-Soo ; Jung, Seung-Hyun ; Kim, Tae-Young ; Kim, Yu-Lee ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 1~13
Short implants are used in parts which have anatomical structures like maxillary sinus, inferior alveolar nerve and limited alveolar height due to severe alveolar bone resorption. In these case, there are no need of additional bone augmentation so there are advantages like reduced entire treatment time, reduced patient's discomfort and protection of important anatomical structures. The aim of this study is, in implants whose length is less than 10mm, to analyze the impact of implant length, diameter, location of implant placement, presence of bone graft, presence of prosthesis splinting on survival rates and marginal bone resorption. The samples used in this study were 227 implants, less than 10mm, placed in 137 patients in Wonkwang university dental hospital implant center. From dental charts the information about implant length, diameter, location of implant placement, presence of bone graft, presence of prosthesis splinting were obtained. Emago advanced v5.6(Oral diagnostic systems, Amsterdam, The Netherlands)program was used to measure the amount of marginal bone resorption. Out of total 227 implants, resulting in 96.5 % of survival rate. There was a tendency toward higher failure rates for the maxilla and bone graft site. No significant difference in marginal bone resorption was found associated with length of implants(p>0.05) and neither with the diameter of implants. Among the risk factors examined, more failure rates of short implants can be attributed to poor bone quality in the maxilla and presence of bone graft. At implants under 10mm, length, diameter, location of implant placement, bone graft and splinting of prosthesis didn't affect marginal bone loss.
Clinical Evaluation of Passive Eruption Using Occlusal Reduction on Periodontium
Kim, Yoo-Jin ; Kim, Sung-Jo ; Choi, Jeom-Il ; Lee, Ju-Youn ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 15~25
The relationship between occlusion and periodontal health has been extensively studied. However, reports on the effects of passive eruption using occlusal reduction has not been sufficient. The purpose of the present randomized clinical trial was to assess the influence of passive eruption using occlusal reduction on the clinical periodontal parameters consisting of attachment level, pocket depth, tooth mobility, width of keratinized gingiva and osseous defect. The study was performed on 40 teeth of 16 subjects who have been treated for the moderate periodontitis at the Department of Periodontology, Pusan National University Hospital. At the baseline examination, after hygienic-phase and after 6 month from passive eruption using occlusal reduction, clinical parameters were monitored and radiographs were taken. The 20 teeth in the test group received passive eruption using occlusal reduction while the 20 control teeth did not receive any occlusal reduction. The results were as follows; 1) Degree of inflammation of periodontium was improved by initial therapy 2) Teeth received passive eruption using occlusal reduction demonstrated significantly greater reduction in pocket depth, tooth mobility and amount of bone loss, and increase in the width of keratinized gingiva, but no significant changes in the attachment level compared to the control teeth 3) There was significantly greater reduction in pocket depth, mobility, amount of bone loss and attachment level in the test teeth after initial hygienic phase when compared with baseline data. Taken together, these results suggest that the passive eruption using occlusal reduction would be helpful to improve periodontal health.
Comparative Analysis of the Implant Torque Controllers
Kim, Dae-Gon ; Park, Chan-Jin ; Cho, Lee-Ra ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 27~36
As the popularity of implant treatment using a variety of problems have been reported. The proper torque values recommended by the manufacturer and the actual tightening force applied to the observed differences. Period for each product used in this study using different torque controllers accuracy for each of the comparisons, were analyzed. Error rate varies by the manufacturer, but all the products used in the reference period for increasing the error rate increased. Repeat the initial tightening, but the reference, showed a value close to the reference value for the width of change was larger. However, increasing the number of repeated tightening of the reference value for the error rate increased, but has reduced the width of the observed changes.
Correlation Between Tooth Mobility and other Periodontal Clinical Parameters of Teethhaving Periodontal Regenerative Treatment
Son, Byung-Chan ; Kim, Sung-Jo ; Choi, Jeom-Il ; Lee, Ju-Youn ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 37~46
The ultimate goal of periodontal therapy is the regeneration of supporting tissues. It is recommended to avoid probing until 6~9 months following the regenerative therapy because the probing may jeopardize the newly formed tissues. We can measure tooth mobility objectively using Periotest. The purpose of this study is to investigate whether Periotest can be used to evaluate the treatment results alternatively, and whether there are the correlations between the changes of Periotest value (PTV) and other clinical parameters. Regenerative treatments have been performed on 29 teeth of twenty five patients, at Department of Periodontology, Pusan National University Hospital. We measured the tooth mobility by Periotest and other parameters at the baseline, 6 and 12 months after regenerative treatment. Compared to the baseline, there were the statistically significant improvements in all the parameters at 6 months and 12 months. There were statistically significant correlations among the probing depth, attachment level, gingival recession and PTV at baseline, 6 months, and 12 months. Also there was the correlation between changes in PTV and in the attachment level at each time of observation period. We may conclude that regenerative therapy would improve the clinical parameters and periodontal status and PTV would be an alternative index to evaluate the healing process after regenerative surgery.
Thickness Changes of the Lower Lip in Mouth Breathing Children and Adolescent
Jeong, Young-Ho ; Lee, Sang-Min ; Yang, Byun-Ho ; Park, In-Young ; Lee, Il-Hong ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 47~56
As attractive lips are important component of appealing faces, the study was conducted to investigate the association of mouth-breathing and thickness of lower lips in mouth-breathers and nasal-breathers. The subjects were 436 adolescent patients aged 8~18 years who took cephalometrics. The results were as follows. The ratio of lower lip thickness to that of upper lip thickness in mouth breathing and nasal breathing groups were
, respectively. According to subjects' skeletal pattern, the ratio in Class I sample was
. Class II subjects showed
, and Class III showed
. Mouth - breathers had higher lower/upper lip ratio than nasal breathers meaning their lower lips were thicker. Skeletal Class II patients group showed the most thickest lower lips among Class I, II, III subgroups.
Effect of Internal Stress on Cyclic Fatigue Failure in ProTaper Universal
Jo, Yun-Sung ; Kim, Jin-Woo ; Cho, Kyung-Mo ; Park, Se-Hee ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 57~66
The purpose of this study was to evaluate the relation between intentionally induced internal stress and cyclic fatigue failure of ProTaper Universal. ProTaper Universal (Dentsply Maillefer) S1, S2, F1, F2, F3, F4 and F5 (25 mm length) were used in this study. To give the internal stress, the ProTaper Universal were put into the .02 taper Endo-Training-Bloc (Dentsply Maillefer) until auto-stop by torque controlled motor. The rotation speed was 300 rpm and torque value was 1.0 Ncm. ProTaper Universal were grouped by the induced number of internal stress and randomly distributed among one control group and three experimental groups (n=10). The four groups were Stress 0 (control), Stress 1, Stress 2 and Stress 3. These instruments were rotated until separation. For cyclic fatigue measurement, inclined plane was used and time for separation was recorded. It was statistically analyzed using two-way ANOVA and Duncan post-hoc test at 95% confidential level. In all ProTaper Universal, there was statistically significant decrease on time for separation in Stress 3. In F2 and F3, there were statistically significant difference between control group and all experimental groups. And in F4 and F5, Stress 2 and 3 groups showed significantly lower cyclic fatigue resistance from Stress 0 group. In the limitation of this study, cyclic fatigue failure of ProTaper Universal is influenced by accumulated internal stress.
An effect of Dentin Bonding Procedure on the Shear Bond Strength of Resin Cement to Porcelain Restoration
Kang, Hae-Jin ; Shin, Soo-Yeon ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 67~78
The purpose of this study was to determine whether there were differences in shear bond strength to human dentin using IDS technique compared with DDS. Forty freshly extracted human molars were and devided into 4 groups. The control group specimens were, on the morrow of tooth preparation, light-cured after application of dentin bonding agent and cemented with resin cement. The IDS/SE(immediate dentin sealing, Clearfil
SE Bond) and IDS/SB (immediate dentin sealing, Adapter
Single Bond 2) specimens were, on the morrow of tooth preparation, light-cured after application of dentin bonding agent(Clearfil
SE Bond and Adapter
Sing Bond 2, respectively), whereas DDS specimens were not treated with any dentin bonding agent. IDS/SE, IDS/SB and DDS specimens were thermocycled. Following that delay, specimens were cemented with resin cement. The dentin bonding agent was left unpolymerized until the application of porcelain restoration. Shear bond strengths were measured using a universal testing machine. Specimens also were evaluated for mode of fracture using an optical microscope. The mean shear bond strengths of control group and IDS/SE groups were not statistically different from one another. The bond strength of IDS/SE group had a significantly higher mean than that of DDS group. There was no significant difference in the mean shear bond strength between IDS/SB(4.11MPa) and DDS group. The evaluation of failure modes indicates that most failures in the control group and IDS/SE groups were mixed, whereas failures in the DDS group were interfacial. When preparing teeth for indirect ceramic restoration, IDS with Clearfil
SE Bond results in improved shear bond strength compared with DDS.
Treatment of Gingival Invagination after Orthodontic Treatment with Extraction
Kim, Yun-Sang ; Cho, Jin-Hyoung ; Cho, Jin-Woo ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 79~86
In most patients with severe crowding or lip protrusion, orthodontic treatment with tooth extraction is done. In these patients, even though space is closed after orthodontic treatment, gingival invagination is observed on the extracted site. Since there are possibilities of space recurrence and regional periodontic problems occurrence, periodontic treatment is necessary on the gingival invagination region. This case was a 16 year old female with a chief complaint of crooked teeth. Since her maxillary premolars were already extracted a few years ago at a local dental clinic, orthodontic treatment was done by extracting mandibular premolars. Unlike maxillary premolar regions, gingival invagination occurred in mandibular premolar regions and gingival flattening was done by excising the gingival invaginated region. Gingival flattening was done once on the left side, twice on the right side and showed stable results. This is a case report of a patient that was prone to gingival invagination after orthodontic treatment with extraction and was treated with gingival flattening.
The Diagnosis and Treatment of Bruxism
Jeong-Seung, Kwon ; Jung, Da-Woon ; Kim, Seong-Taek ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 87~101
Bruxism is extensively defined as a diurnal or nocturnal parafunctional habit of tooth clenching or grinding. The etiology of bruxism may be categorized as central factors or peripheral factors and according to previous research results, central factors are assumed to be the main cause. Bruxism may cause tooth attrition, cervical abfraction, masseter hypertrophy, masseter or temporalis muscle pain, temporomandibular joint arthralgia, trismus, tooth or restoration fracture, pulpitis, trauma from occlusion and clenching in particularly may cause linea alba, buccal mucosa or tongue ridging. An oral appliance, electromyogram or polysomnogram is used as a tool for diagnosis and the American Sleep Disorders Association has proposed a clinical criteria. However the exact etiology of bruxism is yet controversial and the selection of treatment should be done with caution. When the rate of bruxism is moderate or greater and is accompanied with clinical symptoms and signs, treatment such as control of dangerous factors, use of an oral appliance, botulinum toxin injection, pharmacologic therapy and biofeedback therapy may be considered. So far, oral appliance treatment is known to be the most rational choice for bruxism treatment. For patients in need of esthetic correction of hypertrophic masseters, as well as bruxism treatment, botulinum toxin injection may be a choice.
The Change of Facial Contouring after Facial Massage
Im, Eun-Jin ; We, Soo-Young ; Jung, Da-Woon ; Kim, Seong-Taek ;
Journal of Dental Rehabilitation and Applied Science, volume 28, issue 1, 2012, Pages 103~108
This study was carried out to qualitatively examine the effect of hand massage on facial contour treatment. In the research, the hand massage was carried out to do facial treatments 2 times a week, total 20 times for 10 weeks on women in their 20s~40s. 3D Laser Scanner was used to analyze. The change of facial volume decreased by
(p>.05), the thickness of cheekbone area decreased by 0.40mm(p<.05) and the thickness of mastication area decreased by 0.44mm after hand massage(p<.05) By above-mentioned findings, hand massage is likely to be an effective treatment for the reduction of facial volume, the thickness of cheekbone area and mastication area to be basic data of establishing facial line treatment methods.