Journal Detail Information

1

Cite

Share

Sinus floor augmentation at the time of tooth removal.

The Journal of the Korean Academy of Periodontology.2007;37(3):647-653. doi:10.5051/jkape.2007.37.3.647

Rapid crestal bone resorption following maxillary tooth loss is further accentuated in the posterior regions because of pneumatization and enlargement of the maxillary sinuses. A treatment rationale that allows preservation and augmentation of vertical available bone at the time of posterior maxillary tooth extraction may offer numerous therapeutic benefits which are more short courses of therapy and no needs of additional surgical augmentation. The present study comprised 3 patients who had 4 posterior maxillary teeth with no evident bone between the tooth apex and sinus floor, as estimated through preoperative radiographic analysis. Sinus floor augmentation at the time of tooth extraction was chosen for the ltreatment of these patients. After the tooth was carefully extracted, the empty alveolus was thoroughly debrided and a trephine approach was performed. Particulated autogenous bone was gently pushed beyond the empty alveolus to elevate the sinus membrane using an osteotome. The distance between bone crest and sinus floor was radiographically estimated 4 months after the first procedure. Another procedure was then carried out to place the implants of 11 mm length without another augmentation procedure. All implant were clinically stable, with no sign of infection. The presented surgical procedure performed at the time of extraction of posterior maxillary teeth in close proximity to the sinus floor allowed placement of implants of proper length.
Bone Resorption ; Humans ; Maxillary Sinus ; Membranes ; Sinus Floor Augmentation* ; Tooth Apex ; Tooth Extraction ; Tooth Loss ; Tooth*

2

Cite

Share

Immediate implant placement in areas of aesthetic priority.

Seung Hoon LEE ; Young Sung KIM ; Won Kyung KIM ; Young Kyoo LEE

The Journal of the Korean Academy of Periodontology.2007;37(3):637-646. doi:10.5051/jkape.2007.37.3.637

Implants placed immediately after tooth extraction have been shown to be a successfully predictable treatment modality. Several clinical papers suggest that placing implants immediately after tooth extraction may provide some advantages: reduction of the number of surgical procedures or patient visits, preservation of the dimensions of alveolar ridge, and shortening of the interval between the removal of the tooth and the insertion of the implant supported restoration. In this case report, three patients received single immediate implant placements to replace a maxillary anterior tooth at the time of extraction. As the three cases were somewhat different, treatment protocols had to be modified as follows: Case 1. Immediate implant placement with healing abutment connection. Case 2. Immediate implant placement with immediate provisionalization. Case 3. Immediate implant placement with Guided Bone Regeneration(GBR). Every implant of these cases was placed in proper position buccolingually, mesiodistally and apicocoronally. The procedures following implantation such as immediate provisionalization and GBR were free of problem. Healing of each case was uneventful. In all cases, treatment outcomes were mostly satisfactory and the results maintained during follow-up periods. However, one case (Case 3) showed some papilla loss due to failure in delicate soft tissue handling during surgery. This papilla loss was compromised by prosthetic means. In conclusion, immediate implant placement in the fresh extraction socket can be a valid and successful option of treatment in aesthetic area. Moreover, this treatment protocol seems to maintain the preexisting architecture of soft and hard tissues in most cases.
Alveolar Process ; Clinical Protocols ; Follow-Up Studies ; Humans ; Tooth ; Tooth Extraction

3

Cite

Share

Root coverage with subeptithelial connective tissue grafts.

Hyun Jong SONG ; Hyun Seon JANG ; Byung Ock KIM

The Journal of the Korean Academy of Periodontology.2007;37(3):625-636. doi:10.5051/jkape.2007.37.3.625

Marginal tissue recession makes problems like esthetics, root caries, hypersensitivity and plaque accumulation. Request for root coverage is higer than ever, especially esthetic problems involved. So techniques for root coverage hav been developed. There are some kinds of surgical techniques using soft tissue for root coverage. For example, free gingival graft, kinds of pedicle flap, subepithelial connective tissue graft(SCTG), and so on. Subepithelial connective tissue graft has many advantage for root coverage, that is less pain on donor site, good blood supply for graft, and more esthetic result. For this reaseon, this case report was performed to evaluate the effect of root coverage using subepithelial connective tissue graft. Three patients has Miller's class I marginal tissue recession and one patients has Miller's class III marginal tissue recession. The following period is 36.5 month on average. The results are as follows: 1. Root coverage of 100% was obtained in 5 of 6 defects, and 80% was obtained in 1 of 6 defects. The mean root coverage was 96.6% in six cases on 4 patients. 2. The mean root coverage was 3.83mm and mean recession depth decreased from 4mm to 0.16mm. 3. The mean width of clinical attached gingiva increased from 1.5mm to 4mm. The mean width of gained attached gingiva after surgery was 2.5mm. 4. The mean follow up period was 36.5 months. The longest follow up period was 50 months and the shortest follow up period was 22 months. 5. The result that obtained by surgery was stable during follow up period. Within the above results, root coverage with SCTG is an effective procedure to cover marginal tissue recession defect with long term stability.
Connective Tissue* ; Esthetics ; Follow-Up Studies ; Gingiva ; Gingival Recession ; Humans ; Hypersensitivity ; Root Caries ; Tissue Donors ; Transplants*

4

Cite

Share

Clinical short-term effects of full-mouth disinfection.

Shin Hwa LEE ; Ok Su KIM ; Young Joon KIM ; Hyun Ju CHUNG

The Journal of the Korean Academy of Periodontology.2007;37(3):613-624. doi:10.5051/jkape.2007.37.3.613

Full-mouth disinfection (Fdis) completes the entire scaling and root planing (SRP) in one stage within 24 hours for the prevention of microbial recolonization from untreated sites and ecological niches. The aim of this study is to compare the clinical short-term effects of modified Fdis with those of the conventional SRP in the therapy of moderate and severe chronic periodontitis. Modified Fdis group (5 patients) received the entire SRP within 24 hours using chlorhexidine solution (0.1%) and conventional SRP group (5 patients) received SRP per quadrant at one-week intervals. Clinical parameters were measured at baseline, one month and three months after both therapies. The results of this case report were as follows: 1. There were considerable decreases in sulcus bleeding index and plaque index one month after Fdis. 2. The mean probing depth of single-rooted teeth decreased more in Fdis group than conventional SRP group after therapy and, that of multi-rooted teeth decreased similarly in both groups. 3. The mean probing depth decreased 1.77mm in case of initial probing depth of 4-6mm and it decreased 4.13mm in case of initial probing depth of > or = 7mm three months after Fdis. 4. There were the smaller increases in gingival recession together with the larger gains in attachment in Fdis group than conventional SRP group after three months. Within the limitations of this study, one could conclude that Fdis has beneficial clinical effects in the treatment of moderate and severe chronic periodontitis and further research would be helpful including more subjects during a longer period to confirm the beneficial long-term effects of Fdis.
Chlorhexidine ; Chronic Periodontitis ; Disinfection* ; Gingival Recession ; Hemorrhage ; Root Planing ; Tooth

5

Cite

Share

Micromorphometric change of TiO2 b last i mplant surface conditioned with tetracycline-HCl.

Jung Min LEE ; Yeek HERR ; Young Hyuk KWON ; Joon Bong PARK ; Jong Hyuk CHUNG ; Seong Joo HEO

The Journal of the Korean Academy of Periodontology.2007;37(3):599-611. doi:10.5051/jkape.2007.37.3.599

The present study was performed to evaluate the surface roughness and effect of Tetracycline-HCl on the change of implant surface microstructure according to application time. TiO2 surface Implant was utilized. Implant surface was rubbed with 50mg/ml Tetracycline-HCl solution for 0.5min, 1min, 1.5min, 2min, 2.5min and 3min respectively in the Tetracycline-HCl group. Then, specimens were measured surface roughness and processed for scanning electron microscopic observation. The results of this study were as follows. 1. TiO2 blast implant surface showed increased surface roughness 1.5 minute after treatment with Tetracycline-HCl. But, there were not significant differences in saline group after treatment. 2. Tetracycline-HCl group showed changed surface micro-morphology in SEM after 1.5 minute. There were not significant differences in saline group after treatment. 3. Between Tetracycline-HCl group and saline group, there were difference in surface roughness change and SEM micro-morphology. Tetracycline-HCl have influence on TiO2 blast implant surface. In conclusion, the detoxification with 50mg/ml Tetracycline-HCl must be applied respectively with different time according to various implant surfaces.

6

Cite

Share

The effect of conditioning by Tetracycline-HCl on implant surface: The SEM study and surface roughness measurements: RBM surface.

Hae Soo LIM ; Joon Bong PARK ; Young Hyuk KWON ; Yeek HERR ; Jong Hyuk CHUNG

The Journal of the Korean Academy of Periodontology.2007;37(3):585-597. doi:10.5051/jkape.2007.37.3.585

The present study was performed to evaluate the effect of Tetracycline-HCl and Saline on the change of implant surface microstructure and surface roughness according to application time. Implants with resorbable blasting media surface were utilized. Before test all 13 implants were measured surface roughness. Among them, 6 implants were rubbed with 50mg/ml Tetracycline-HCl solution and other 6 implants with saline for 1/2min., 1min., 1 1/2min., 2min., 2 1/2min and 3min. Then, specimens were processed for scanning electron microscopic observation and surface roughness after test. The results of this study were as follows. 1. Control group showed a few irregular, rough, uneven surface with crater-like depression. 2. The test group with Tetracycline-HCl conditioning showed an altered surface when Tetracycline-HCl was applied for 30secs, and showed a various surface alteration as application times go on. 3. The test group with Saline conditioning showed no significant surface differences and surface roughness. 4. The significant increase of Ra value was showed when Tetracycline-HCl was applied for 30secs. In conclusion, the 50mg/ml Tetracycline-HCl must not be applied for the RBM surface implant for surface treatment.
Depression

7

Cite

Share

The Effects of Citric Acid on HA coated Implant Surface.

Joong Cheon KIM ; Young Hyuk KWON ; Joon Bong PARK ; Yeek HERR ; Jong Hyuk CHUNG ; Seung Il SHIN

The Journal of the Korean Academy of Periodontology.2007;37(3):575-584. doi:10.5051/jkape.2007.37.3.575

The present study was performed to evaluate the effect of citric acid on the change of implant surface microstructure according to application time. Implants with pure titanium machined surface, and HA coated surface were utilized. Pure titanium machined surface and HA coated surface were rubbed with pH 1 citric acid for 30s., 45s., 60s., 90s., and 120s. respectively. Then, the specimens were processed for scanning electron microscopic observation. The following results were obtained. 1. The specimens showed a few shallow grooves and ridges in pure titanium machined surface implants. The roughness of surfaces conditioned with pH 1 citric acid was slightly increased. 2. In HA-coated surfaces, round particles were deposited irregularly. The specimens were not significant differences within 45s. But, began to be changed from 60s. The roughness of surfaces was lessened and the surface dissolution was increased relative to the application time. In conclusion, pure titanium machined surface implants and HA coated surface implants can be treated with pH 1 citric acid for peri-implantitis treatment if the detoxification of these surfaces could be evaluated.
Citric Acid* ; Hydrogen-Ion Concentration ; Peri-Implantitis ; Titanium

8

Cite

Share

IL-10 gene promoter polymorphisms in Korean generalized aggressive periodontitis patients.

Ji Sun RYN ; Ok Su KIM

The Journal of the Korean Academy of Periodontology.2007;37(3):563-573. doi:10.5051/jkape.2007.37.3.563

Genetic polymorphisms associated with aggressive periodontitis have previously been reported. Interleukin-10 is an immunoregulatory cyto ine that plays a role in the patho genesis of periodontitis. Individual capacity for IL-10 production appears to be under genetic influence. The aim of present investigation was to explore possible genetic association of IL-10 gene promoter polymorphisms with generalized aggressive periodontitis. The study population consisted of 37 generalized aggressive periodontitis patients from the Department of Periodontology, Chonnam National University Hospital and 27 control subjects, all the subjects were non-smokers. Genomic DNA was obtained from buccal swab. The IL-10 promoter -597, -824, -1082 positions were genotyped by amplifying the polymorphic regions using polymerase chain reaction (PCR), followed by restriction enzyme digestion and gel electrophoresis. IL-10-597 C (allele 1) to A (allele 2) and IL-10-824 C (allele 1) to T (allele 2) and IL-10-1082 G (allele 1) to A (allele 2) polymorphisms were examined. The results were as follows. 1. In patients, the distribution of genotypes C/C, C/A and A/A at Il-10-597 was determined to be 13.5%, 37.8% and 48.7%, respectively and the distribution of genotypes at IL-10-824 was the same as that of IL-10-597. The distribution of genotypes G/G, G/A and A/A at IL-10-1082 was found to be 2.7%, 16.2% and 81.4%, respectively. No statistical difference in genotype distribution was found between the patient and control groups. 2. Allele 2 carriage rate at the three position of the IL-10 promoter region was higher in the control group than the patient group. 3. Allele 2 frequencies at IL-10-597 and -824 positions were higher in female group than male group and its difference was statistically significant(p<0.05). No significant difference in genotype distribution between the control and patient groups. Allele frequency between control and patient groups was not significantly different although allele 2 frequency at the three positions in the IL-10 promoter region appeared to be higher in control group. In conclusion, no clear association between IL-10 gene promoter polymorphisms and generalized aggressive periodontitis in Korean was observed.
Aggressive Periodontitis* ; Alleles ; Digestion ; DNA ; Electrophoresis ; Female ; Gene Frequency ; Genotype ; Humans ; Interleukin-10* ; Jeollanam-do ; Male ; Periodontitis ; Polymerase Chain Reaction ; Polymorphism, Genetic ; Promoter Regions, Genetic

9

Cite

Share

Induction of osteoclastogenesis-inducing cytokines and invasion by alive Aggregatibacter actinomycetemcomitans in osteoblasts.

Ho Kil CHOI ; Yang Sin LEE ; Min Young KIM ; Kyoung Dae KIM ; Jeong Heon CHA ; Yun Jung YOO

The Journal of the Korean Academy of Periodontology.2007;37(3):553-562. doi:10.5051/jkape.2007.37.3.553

Osteoblasts regulate osteoclastogenesis by production of various cytokines. Aggregatibacter(A) actinomycetemcomitans is one of periodontopathogens which invades gingival tissue. Therefore, clarifying the effect of alive A. actinomycetemcomitans on osteoblasts is important to understand the mechanism of alveolar bone resorption in periodontitis. We investigated induction of osteoclastogenesis- inducing cytokines, adherence, and invasion by A. actinomycetemcomitans in osteoblasts. Osteoblasts were isolated from mouse calvaria and expression of cytokines was determined by RT-PCR. When the ratio of the number of A. actinomycetemcomtians to the number of osteoblasts was 10:1, 50:1 and 100:1, RANKL mRNA expression was increased. A. actinomycetemcomitans also increased expression of macrophage inflammatory protein (MIP)-1alpha, interleukin (IL)-1beta, and tumor necrosis factor (TNF)-alpha. A. actinomycetemcomitans attached to and invaded osteoblasts at ratio of 1000:1. These results suggest that A. actinomycetemcomitans increases osteoclastogenesis-inducing ability of osteoblasts by stimulating the expression of RANKL, MIP-1alpha, IL-1beta, and TNF-alpha and that invasion of A. actinomycetemcomitans provides a means by which the bacteria escape from immune system and antibiotic therapy.
Aggregatibacter actinomycetemcomitans* ; Aggregatibacter* ; Animals ; Bacteria ; Bone Resorption ; Chemokine CCL3 ; Cytokines* ; Immune System ; Interleukins ; Macrophages ; Mice ; Osteoblasts* ; Periodontitis ; RNA, Messenger ; Skull ; Tumor Necrosis Factor-alpha ; United Nations

10

Cite

Share

The effect of maintenance period of non-resorbable membrane on bone regeneration in rabbit calvarial defects.

Min Gu JUNG ; Hyun Seon JANG ; Byung Ock KIM

The Journal of the Korean Academy of Periodontology.2007;37(3):543-551. doi:10.5051/jkape.2007.37.3.543

When clinicians faced with an insufficient volume of supporting bone on ideally esthetic and biomechanical position for dental implantation, guided bone regeneration(GBR) was indicated. Although GBR has wide application at clinic, proper time of membrane removal remains qustionable in using non-resorbable membrane, such as non-expanded polytetrafluoroethylene(PTFE). The aim of this study was to compare the effect of maintenance period of PTFE membrane on bone regeneration in rabbit calvarial defects. Eight adult New Zealand white female rabbits were used in this study. Four defects were surgically made in their calvaria. Using a trephine bur, 4 'through and through' defects were created and classified into 3 groups, which were consisted of control group(no graft), experimental group 1(autogenous bone)and experimental group 2(deproteinized bovine bone; OCS-B(R)). The defects were covered with PTFE membrane(Cytoplast(R)). Membranes were removed after 1, 2, 4 and 8 weeks post-GBR procedure in 2 rabbits repectively. All rabbits were sacrificed after 8 week post-GBR procedure. Specimens were harvested and observed histologically. The results were as follow; 1) The use of graft material and membrane was necessary in GBR procedure. 2) When PTFE membranes were removed early, the most favorable bone regeneration was revealed in experimental group I, followed by experimental group II and control group. 3) On GBR, it is recommended that membrane should maintain for 4 weeks with autogenous graft. As well, the use of xenograft need longer maintenance period than autogenous bone. Further evaluations will be needed, such as histomorphologic research, more species and different kinds of graft materials. And on the basis of these studies, clinical researches would be required.
Adult ; Bone Regeneration* ; Dental Implantation ; Dental Implants ; Female ; Heterografts ; Humans ; Membranes* ; New Zealand ; Polytetrafluoroethylene ; Rabbits ; Skull ; Transplants

DISPLAY OPTIONS

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share

Cite

Share