치아 임플란트에서 이비인후과의 역할

정진혁,김기태,정승규 대한비과학회 2008 Journal of rhinology Vol.15 No.2

In recent years, dental implants have become a frequently performed procedure in most dental clinics. The edentulous posterior maxilla provides a limited amount of bony volume due to atrophy of the alveolar ridge and pneumatization of the maxillary sinus. Consequently, dental implant placement in the posterior maxilla can be complicated and it becomes a matter for the otolaryngology field. However, for most otolaryngologists, knowledge of dental implantation is scarce. Therefore, consensus on the diagnosis and treatment associated with dental implants is needed. During consultation, before a dental implant, a nasal endoscope and paranasal sinus CT scan should be taken and any mucosal thickening, incidental polyps, acute sinusitis, chronic sinusitis, or malignancy should be differentiated and treated as needed. After the dental implant, acute sinusitis and migration of the dental implant into the maxillary sinus can occur because of damage to sinus mucosa or a foreign body reaction. These complications can be evaluated and treated more easily by an otolaryngologist than by a dentist. Nasal endoscopy and endoscopic sinus surgery can be applied to problems associated with dental implants. In recent years, dental implants have become a frequently performed procedure in most dental clinics. The edentulous posterior maxilla provides a limited amount of bony volume due to atrophy of the alveolar ridge and pneumatization of the maxillary sinus. Consequently, dental implant placement in the posterior maxilla can be complicated and it becomes a matter for the otolaryngology field. However, for most otolaryngologists, knowledge of dental implantation is scarce. Therefore, consensus on the diagnosis and treatment associated with dental implants is needed. During consultation, before a dental implant, a nasal endoscope and paranasal sinus CT scan should be taken and any mucosal thickening, incidental polyps, acute sinusitis, chronic sinusitis, or malignancy should be differentiated and treated as needed. After the dental implant, acute sinusitis and migration of the dental implant into the maxillary sinus can occur because of damage to sinus mucosa or a foreign body reaction. These complications can be evaluated and treated more easily by an otolaryngologist than by a dentist. Nasal endoscopy and endoscopic sinus surgery can be applied to problems associated with dental implants.

치과 임플란트 국민건강보험 급여화 이후 노인의 치과 임플란트 이용에 대한 예측 모형: 사회경제적 요인 중심으로

이상희,김규석,문혜영,강정윤 한국치위생학회 2024 한국치위생학회지 Vol.24 No.1

Objectives: The demand for dental care is expected to increase as the population ages. This study aimed to predict the utilization of dental implant care following the expansion of national health insurance benefits for dental implants. Methods: Multiple linear regression analysis was performed on HIRA big data open portal data and DNN-based artificial intelligence models to forecast the utilization of dental care in relation to the national health insurance coverage for dental implants. Results: National health insurance coverage of dental implants was found to be associated with the number of patients using dental implant services and demonstrated a statistical significance. The dental implant services utilization increased with the increased dental implant health insurance benefits for the elderly population, increased mean by region, increased number of dental institutions by region, and increased health insurance coverage rate for dental implants. However, the dental implant services utilization decreased with the increased number of older people living alone and increased size of dental institutions. Conclusions: With the expansion of the national health insurance coverage for dental implants, it is predicted that the utilization of dental implant medical services will increase in the future.

식립 보조도구를 이용한 3D 치아 임플란트 시술 시뮬레이션

박형욱(Hyung-Wook Park),김명수(Myong-Soo Kim),박형준(Hyungjun Park) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2

Surgeon dentists usually rely on their experiential judgments from patients’ oral plaster casts and medical images to determine the positional and directional information of implant fixtures and to perform drilling tasks during dental implant surgical operations. This approach, however, may cause some errors and deteriorate the quality of dental implants. Computer-aided methods have been introduced as supportive tools to alleviate the shortcomings of the conventional approach. In this paper, we present an approach of 3D dental implant simulation which can provide the realistic and immersive experience of dental implant information. The dental implant information is primarily composed of several kinds of 3D mesh models obtained as follows. Firstly, we construct 3D mesh models of jawbones, teeth and nerve curves from the patient’s dental images using software MimicsTM. Secondly, we construct 3D mesh models of gingival regions from the patient’s oral impression using a reverse engineering technique. Thirdly, we select suitable types of implant fixtures from fixture database and determine the positions and directions of the fixtures by using the 3D mesh models and the dental images with software SimplantTM. Fourthly, from the geometric and/or directional information of the jawbones, the gingival regions, the teeth and the fixtures, we construct the 3D models of surgical guide stents which are crucial to perform the drilling operations with ease and accuracy. In the application phase, the dental implant information is combined with the tangible interface device to accomplish 3D dental implant simulation. The user can see and touch the 3D models related with dental implant surgery. Furthermore, the user can experience drilling paths to make holes where fixtures are implanted. A preliminary user study shows that the presented approach can be used to provide dental students with good educational contents. With future work, we expect that it can be utilized for clinical studies of dental implant surgery.

식립 보조도구를 이용한 3D 치아 임플란트 시술 시뮬레이션

박형욱(Hyung-Wook Park),김명수(Myong-Soo Kim),박형준(Hyungjun Park) (사)한국CDE학회 2011 한국CDE학회 논문집 Vol.16 No.3

Surgeon dentists usually rely on their experiential judgments from patients’ oral plaster casts and medical images to determine the positional and directional information of implant fixtures and to perform drilling tasks during dental implant surgical operations. This approach, however, may cause some errors and deteriorate the quality of dental implants. Computer-aided methods have been introduced as supportive tools to alleviate the shortcomings of the conventional approach. In this paper, we present an approach of 3D dental implant simulation which can provide the realistic and immersive experience of dental implant information. The dental implant information is primarily composed of several kinds of 3D mesh models obtained as follows. Firstly, we construct 3D mesh models of jawbones, teeth and nerve curves from the patient’s dental images using software Mimics™. Secondly, we construct 3D mesh models of gingival regions from the patient’s oral impression using a reverse engineering technique. Thirdly, we select suitable types of implant fixtures from fixture database and determine the positions and directions of the fixtures by using the 3D mesh models and the dental images with software Simplant™. Fourthly, from the geometric and/or directional information of the jawbones, the gingival regions, the teeth and the fixtures, we construct the 3D models of surgical guide stents which are crucial to perform the drilling operations with ease and accuracy. In the application phase, the dental implant information is combined with the tangible interface device to accomplish 3D dental implant simulation. The user can see and touch the 3D models related with dental implant surgery. Furthermore, the user can experience drilling paths to make holes where fixtures are implanted. A preliminary user study shows that the presented approach can be used to provide dental students with good educational contents. With future work, we expect that it can be utilized for clinical studies of dental implant surgery.

Design and fabrication of custom-made dental implants

Xianshuai Chen,Longhan Xie,Jianyu Chen,R. Du,Feilong Deng 대한기계학회 2012 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.26 No.7

Dental implant has been attracting more and more attention due to their advantages of reliability and comfort. It is estimated that 10%of people will need dental implants in their life time. Especially, companies offer a system for customer to choice. But, no one research on custom-made dental implants. Traditional implants have their limitation and they are not better fit due to the difference of patient’s oral condition. The advantages of custom implant are accuracy fit and esthetic emergence profile. So, custom-made implant is desirable. Another key problem of custom-made dental implant is manufacturing. Dental implant is difficult to machine due to its complex features and its material (titanium). With the ever increasing demand for tight tolerance and increased complexity and accuracy, traditional machine tools have become ineffective for machining them. So, we design and built a PC-based CNC Turn-Mill-Hob professional machining center for machining our custom-made dental implants accurately and efficiently. This paper introduces our method: firstly, the custom-made dental implant in various oral conditions is designed by using our implant database. And then, FEA results indicate the stress distribution and magnitude of implant-bone interface for dentist referring. Finally, samples are automatic machined by our machining center.

임플란트 표면에 따른 인공치면세균막 형성에 관한 연구

김진우(Jin-Woo Kim),한세진(Se-Jin Han),김경욱(Kyung-Wook Kim) 대한구강악안면외과학회 2008 대한구강악안면외과학회지 Vol.34 No.3

The purpose of this study was to evaluate the artificial dental plaque by Streptococcus mutans on 4 different implant surfaces. In this study, the specimens were divided into 4 groups according to implant surface treatment. Uncoated implant group(n=5) which has an uncoated, smooth surfaced implant(Osstem, Korea), SLA implant group(n=5) which has an sandblasted large grit and acid-etched surface implant(Bicon, USA). Oxidized implant group(n=5) which has an oxidized surfaced implant (Osstem, Korea), and RBM implant group(n=5) which has resorbable blasting media(RBM) surfaced implant(Osstem, Korea). Acquired pellicle by human saliva and dental plaque by Streptococcus mutans were made on each implant surface. To analyze the plaque condition on implants surfaces, cell count and optical density were taken as a microbiologic method, and SEM(Scanning Electronic Microscope) findings was also taken for evaluation of surface condition. The following results were obtained. 1. Cell counting results of artificial dental plaque were Uncoated group(658.0±102.0), RBM group(878.0±170.0), SLA group (946.0±42.0), Oxidized group(992.0±40.0), and there was difference between Oxidized group and Uncoated implant group(p<0.05). In case of modified cell counting results by v/w% were RBM group(197.8±45.2), Oxidized group(207.04±8.34), Uncoated group(261.6±40.6), SLA group(315.4±14.0), and there was difference between RBM group and SLA group(p<0.05). 2. Optical density results of artificial dental plaque after ultrasonic treatment was that there was difference among groups, and optical density of RBM group was higher than that of Uncoated group(p<0.05). In case of modified optical density results by v/w%, there was difference among groups, and the modified optical density of Uncoated group and SLA group was higher than those of Oxidized group and RBM group(P>0.05). 3. SEM findings of artificial dental plaque on the surfaces of implant as follows; there were artificial dental plaque on the surfaces of all test implants. Streptococcus mutans and by-product were observed at 10,000 times magnified condition on all test implants. Adhesion area of artificial dental plaque was about 1/2 of total surface after 24 hours incubate at 37℃. These results showed that there were differences among implant surfaces on the growth of Streptococcus mutans, and bacteria and by-product were covered about 1/2 area of total implant surfaces at 24 hours incubate at 37℃.

Proton pump inhibitor intake negatively affects the osseointegration of dental implants: a retrospective study

Mehmet Ali Altay,Alper Sindel,Ö,znur Ö,zalp,Nelli Yıldırımyan,Burak Kocabalkan 대한구강악안면외과학회 2019 대한구강악안면외과학회지 Vol.45 No.3

Objectives: This study sought to investigate the association between the systemic intake of proton pump inhibitors (PPI) and the early failure of dental implants. Materials and Methods: A retrospective cohort study involving 1,918 dental implants in 592 patients (69 implants in 24 PPI users and 1,849 implants in 568 nonusers, respectively) was conducted. The effect of PPI intake on the osseointegration of dental implants was evaluated using patientand implant-level models. Results: Among 24 PPI users, two patients experienced implant failure, one of whom had three and the other of whom had one failed implant, respectively. Thus, the rate of failure for this population was 8.3%. Separately, 11 nonusers each experienced one implant failure, and the failure rate for these patients was 1.9%. Fisher’s exact test revealed statistically significant differences between PPI users and nonusers at the implant level (P=0.002) but failed to show any significance at the patient level (P=0.094). The odds of implant failure were 4.60 times greater among PPI users versus nonusers. Dental implants that were placed in patients using PPIs were found to be 4.30 times more likely to fail prior to loading. Conclusion: The findings of this study suggest that PPI intake may be associated with an increased risk of early dental implant failure.

Dental Implants in Patients with Gingival Oral Lichen Planus

Shim, YoungJoo Korean Academy of Orofacial Pain and Oral Medicine 2019 Journal of Oral Medicine and Pain Vol.44 No.3

Purpose: With the popularity of implant therapy, clinicians need to know about treating the dental implant in patients with gingival involvement of oral lichen planus (OLP). The aim of this study is to evaluate the survival and success rates of dental implant and propose of clinical guidelines for implant treatment in OLP patient with gingival involvement. Methods: A literature search was performed in PubMed/Medline, and Cochrane database. Papers in English language published between 1990 and 2019 were evaluated. The focused questions were following; 1) Dose gingival OLP affect the survival and success rates of dental implants? 2) The management of OLP patients with gingival involvement receiving dental implant. Results: There was no study about the evaluation of dental implant only in gingival OLP patient. Five studies evaluating dental implants in OLP patients were included in this review. Implant survival rate was 100.0% in well-controlled OLP patients in all included studies. The use of topical/systemic corticosteroid in OLP patients was performed before and/or after implant placement in all included studies. Conclusions: The implant survival and success rates in well-controlled OLP patients did not different from that of non-OLP healthy subjects. The gingival OLP is associated with higher rate of peri-implant mucositis. Adequate management of gingival OLP lesions before and after implant insertion is required to reduce inflammation and associated bone loss.

A retrospective study on related factors affecting the survival rate of dental implants

Hee-Won Jang,Jeong-Kyung Kang,Ki Lee,Yong-Sang Lee,Pil-Kyoo Park 대한치과보철학회 2011 The Journal of Advanced Prosthodontics Vol.3 No.4

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.

Current trends in dental implants

Laura Gaviria,John Paul Salcido,Teja Guda,Joo L. Ong 대한구강악안면외과학회 2014 대한구강악안면외과학회지 Vol.40 No.2

Tooth loss is very a very common problem; therefore, the use of dental implants is also a common practice. Although research on dental implant designs, materials and techniques has increased in the past few years and is expected to expand in the future, there is still a lot of work involved in the use of better biomaterials, implant design, surface modification and functionalization of surfaces to improve the long-term outcomes of the treatment. This paper provides a brief history and evolution of dental implants. It also describes the types of implants that have been developed, and the parameters that are presently used in the design of dental implants. Finally, it describes the trends that are employed to improve dental implant surfaces, and current technologies used for the analysis and design of the implants.