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Full mouth rehabilitation of a partially edentulous patient with crossed occlusion using implant-retained RPD with zirconia occlusal table.

Tae Min KWON ; Chi Won SEO ; Kyung A KIM ; Seung Geun AHN ; Jae Min SEO

Journal of Dental Rehabilitation and Applied Science.2016;32(4):314-321. doi:10.14368/jdras.2016.32.4.314

Conventional removable partial dentures (RPDs) with distal extensions are associated with some problems, including lack of stability that calls for frequent relining, and cantilever actions of claps that can produce excessive loading to abutment teeth, and the need for unesthetic retentive arm clasps. Therefore, IARPDs (Implant-assisted RPD) that use implants to support or retain RPDs has been reported to improve stability, esthetics and masticatory performance of RPDs. Also, an IARPD that has zirconia occlusal table can prevent the incongruity of occlusal plane and the extrusion of antagonistic tooth. In this case of partially edentulous patient with crossed occlusion, each edentulous area was restored with implant fixed prosthesis and implant retained partial denture to suit each situation. Through the procedure, satisfactory outcomes were achieved both in functional and esthetic aspects.
Arm ; Dental Occlusion ; Denture, Partial ; Denture, Partial, Removable ; Esthetics ; Humans ; Mouth Rehabilitation* ; Mouth* ; Prostheses and Implants ; Tooth

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Overdenture treatment in patient with severely worn dentition: a case report.

Min Ji KIM ; Jun Yub KIM ; Hong So YANG ; Hyun Pil LIM ; Kwi Dug YUN ; Chan PARK ; Jin Ho SHIN ; Sang Won PARK

Journal of Dental Rehabilitation and Applied Science.2016;32(4):307-313. doi:10.14368/jdras.2016.32.4.307

Overdenture is one of the methods of patients with severely worn dentition. Remaining natural teeth help preserve alveolar bone and proprioception and provide rigid support. Also, overdenture distributes the concentrated stress applied to the abutment tooth and denture supporting tissues. There is an advantage that it can provide long-term stability to denture. In this case, the patient with only a few teeth due to severe wear and caries was satisfied with good function and favorable esthetics by using overdenture.
Dentition* ; Denture, Overlay* ; Dentures ; Esthetics ; Humans ; Proprioception ; Tooth

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Overdenture with magnetic attachments for a patient with Parkinson's disease: a case report.

Bo Young MA ; Byung Kwee MIN ; Hong So YANG ; Sang Won PARK ; Hyun Pil LIM ; Kwi Dug YUN ; Chan PARK ; Jin Ho SHIN

Journal of Dental Rehabilitation and Applied Science.2016;32(4):301-306. doi:10.14368/jdras.2016.32.4.301

It is very hard for edentulous patients to satisfy retention and stability with their complete denture. Especially, for patients with systemic diseases such as Parkinson's disease causing involuntary and limited movements, fabricating complete dentures may be challenging to both dentists and patients due to functional limitations. To overcome this problem, overdentures can be used through conserving retained roots. In this case, a 45-year-old male patient had to extract numerous teeth due to dental caries, and at the time of visit he was taking drugs for diabetes and Parkinson's disease for a period of long time. A complete denture was applied to maxilla, and for mandible, an overdenture on two preserved retained roots was applied where its retention and stability were obtained by magnetic attachments. This case reports that overdenture with retained roots improved overall functional limitations.
Dental Caries ; Dentists ; Denture, Complete ; Denture, Overlay* ; Humans ; Male ; Mandible ; Maxilla ; Middle Aged ; Parkinson Disease* ; Tooth

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Chemical compatibility of interim material and bonding agent on shear bond strength.

Jonghyuk LEE

Journal of Dental Rehabilitation and Applied Science.2016;32(4):293-300. doi:10.14368/jdras.2016.32.4.293

PURPOSE: The purpose of this study is finding proper bonding agents to be used when adding bis-acryl composite provisional materials. MATERIALS AND METHODS: Three bonding agents with different chemical compositions were included in this study. Forty disk shaped specimens of bis-acryl composite provisional material were prepared and divided into 4 groups according to the bonding agents. Control group didn't have bonding agent. Through the Teflon mould with 4.0 mm diameter hole with 4.0 mm thickness the same bis-acryl composite provisional material was added on the disks after the surface of each specimen was treated with designated bonding agent according to the manufacturer's instructions. Shear bond test was performed and the fractured surfaces were inspected with a microscope. One-way analysis of variance was conducted and the result was further analysed with Turkey post hoc test at the significance level of 0.05. RESULTS: The highest strength was acquired from the specimens bonded with chemical cure system and it was statistically significant (P < 0.05). This group showed 100% cohesive failures. The lowest bonding strength was recorded from the specimens used conventional light cure bonding agent, and this group's result was similar with the control group. The group used a light cure bonding agent claiming improved compatibility revealed significantly higher bond strength to the traditional light cure bonding agent group in a statistically significant way (P = 0.043). CONCLUSION: According to the bonding agent used the shear bond strength was significantly affected. Therefore the choice of proper bonding agent is important when hiring a bonding agent to add bis-acryl composite provisional materials.
Polytetrafluoroethylene ; Turkey

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Factors associated with the survival and marginal bone loss of dental implants: a 5-year retrospective study.

Eul Rak SONG ; Jae Kwan LEE ; Heung Sik UM ; Se Hwan PARK ; Beom Seok CHANG

Journal of Dental Rehabilitation and Applied Science.2016;32(4):280-292. doi:10.14368/jdras.2016.32.4.280

PURPOSE: The purpose of this study was to compare the long-term survival rate and peri-implant marginal bone loss related to multiple risk factors including the clinician's experience. MATERIALS AND METHODS: Four hundred twenty implants in 146 patients, who had involved a supportive periodontal therapy program every 3 to 6 months and had follow up data for at least 5 years, were selected as the study group. Peri-implant marginal bone loss, data of demographic, implant and surgical characteristics were collected from peri-apical radiographs and chart review. Implant survival was regarded as the remaining with radiographic marginal bone level in excess of 50% of the fixture length for any reason. RESULTS: The cumulative survival rate after 5 years of loading was 94.9%. In binary logistic regression analysis, smoking status (P = 0.033) and presence of spontaneous cover screw exposure (P < 0.001) were significantly related to 5-year survival of implants. In stepwise multiple regression analysis, smoking status (P < 0.001), type of abutment connection (P < 0.001) and implant surface (P = 0.033) were significantly related to peri-implant marginal bone level. And the year of resident was not statistically related to 5-year implant survival in simple logistic regression analysis (P = 0.171). CONCLUSION: Smoking status, spontaneous cover screw exposure, type of abutment connection and implant surface might influence the implant success. There was no significant correlation between the year of resident and implant failure.
Alveolar Bone Loss ; Dental Implants* ; Follow-Up Studies ; Humans ; Logistic Models ; Retrospective Studies* ; Risk Factors ; Smoke ; Smoking ; Survival Rate

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Prevention of Candida albicans infection in dental polishing lathe by chlorhexidine.

Young Gyun SONG

Journal of Dental Rehabilitation and Applied Science.2016;32(4):274-279. doi:10.14368/jdras.2016.32.4.274

PURPOSE: The purpose of this study was to evaluate the transmission of candida in denture by dental polishing lathe. MATERIALS AND METHODS: Maxillary complete dentures made from the same model were infected with Candida albicans. Polishing wheels were keep in various chlorhexidine solution and distilled water for an hour. The infected dentures were polished by prepared dental polishing lathe with sterile pumice and distilled water. And then sterile maxillary complete dentures were polished with same method. Polishing surface was wiped with a cotton swab and the sample was regrown for checking Candida albicans. RESULTS: All polishing wheel with chlorhexidine resist fungal infection. But the polishing wheel with distilled water is infected with Candida albicans. CONCLUSION: A chlorhexidine is highly efficient in fungal infection prevention on dental polishing lathe.
Candida albicans* ; Candida* ; Chlorhexidine* ; Dental Polishing* ; Denture, Complete ; Dentures ; Methods ; Water

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A literature review on implant abutment and soft tissue response.

Young Hoon LEE ; Kyung Ho KO ; Yoon Hyuk HUH ; Chan Jin PARK ; Lee Ra CHO

Journal of Dental Rehabilitation and Applied Science.2016;32(4):263-273. doi:10.14368/jdras.2016.32.4.263

In the implant prosthetic procedure, the soft tissue reaction was varied with the material and surface treatment of the abutment. It may be the cause of the peri-implantitis, and hence it can affect the long-term prognosis of the implant prosthesis. Titania and zirconia abutment presented superior biocompatibility and stable soft tissue reaction, while gold alloy abutment showed unfavorable reaction sometimes. A soft tissue reaction can be differed by the surface characteristics even in the same material type. Because rougher surface induces a bacterial attachment, the part contacting a soft tissue should have smooth surface. Additional surface treatment can enhance the cellular response without increasing bacterial attachment. Repeated removal and insertion of the abutment and the shape of the abutment may affect the soft tissue reaction, also. Ultrasonic cleaning and argon plasma cleaning are effective way to clean the retained micro-dust on the customized abutment.
Alloys ; Argon ; Peri-Implantitis ; Plasma ; Prognosis ; Prostheses and Implants ; Ultrasonics

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Full mouth rehabilitation with extremely worn dentition.

Hwa Ryun CHA ; Kyeong Yeon YEOM ; Yong Sang LEE ; Na Hong KIM

Journal of Dental Rehabilitation and Applied Science.2017;33(3):238-244. doi:10.14368/jdras.2017.33.3.238

Pathologic attrition leads to pathologic damage on occlusal plane, functional disorders, occlusal disharmony, esthetic problems, pulpal lesion, temporomandibular joint (TMJ) disorder. In this case, treatment plan should be considered for possibility of vertical dimension loss, occlusal pattern, esthetics, phonetics, amount of vertical dimension increase. This case report was a 71-year-old man who had severely worn dentition. Full mouth rehabilitation was carried out with vertical dimension increase due to limited space for prosthesis. After evaluation of provisional restorations for patient's compliance, final restorations were fabricated and routine clinical assessments were made. This case presents that a satisfactory clinical result was achieved by restoring the worn dentition.
Aged ; Compliance ; Dental Occlusion ; Dentition* ; Esthetics ; Humans ; Mouth Rehabilitation* ; Mouth* ; Phonetics ; Prostheses and Implants ; Temporomandibular Joint ; Tooth Wear ; Vertical Dimension

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Additional use of autogenous periosteal barrier membrane combined with regenerative therapy in the interproximal intrabony defects: case series.

Hyun Joo KIM ; Hyung min KIM ; Ju Youn LEE

Journal of Dental Rehabilitation and Applied Science.2017;33(3):230-237. doi:10.14368/jdras.2017.33.3.230

Regenerative therapy in an interproximal intrabony defect is a challenge due to unaesthetic appearance after surgery. In this article, we introduce a case series of additional use of autogenous periosteal barrier membrane combined with bovine bone mineral and enamel matrix derivative (EMD) in interproximal periodontal intrabony defects to overcome an aforementioned shortcoming. During the periodontal regenerative surgery, autogenous periosteal membrane was additionally adopted besides xenograft material and EMD. Clinical and radiographic examinations were performed before surgery and 6 months after surgical treatment. All clinical parameters were improved and the intrabony defects were resolved on the radiography 6 months after surgery. Moreover, soft tissue esthetics such as the contour of interdental papilla was better than that of conventional regenerative therapy. Periodontal regenerative therapy using several graft materials and bioactive materials was effective in the treatment of periodontal intrabony defect. Moreover, using of autogenous periosteal barrier membrane combined with xenograft and EMD has additional effect for the treatment of an interproximal intrabony defect in terms of augmentation of interdental soft tissue volume.
Dental Enamel ; Esthetics ; Gingiva ; Guided Tissue Regeneration ; Heterografts ; Membranes* ; Miners ; Periosteum ; Radiography ; Transplants

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Implant impression using closed mouth impression technique: a case report.

So Yeun KIM ; Joo Hyeun KIM ; Kyoung Hwa JUNG ; Hye Mi JEON ; Eun Sook KANG ; Mi Jung YUN

Journal of Dental Rehabilitation and Applied Science.2017;33(3):223-229. doi:10.14368/jdras.2017.33.3.223

Closed mouth impression technique by using bite tray is preferred for single tooth impression taking. However, for implant impression taking, open mouth impression technique by using single arch tray is generally used whether it is for single implant or multiple implant. Closed mouth impression technique by using bite tray can save time and materials. It also decreases the chance of error occurrence when a model is mounted on an articulator. In this case report, we tried to show a satisfying result of fabricating single implant fixed prosthodontics after bite tray impression taking by using two different copings for closed mouth impression.
Dental Articulators ; Mouth* ; Prosthodontics ; Tooth

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