著者

保坂 尚紀 輿 秀利 伊藤 賢 中村 正和 梨本 正恵

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 = Journal of Japanese Society of Oral Implantology (ISSN:09146695)

巻号頁・発行日

vol.13, no.2, pp.395-399, 2000-06-30

参考文献数

11

被引用文献数

1

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In prophylaxis of postoperative infection, an air-cleaner was used to remove air-contaminant bacteria and fungi in the operating room during dental implant surgery. In general, next to Coagulasenegative staphylococci, the most frequent isolate, Corynebacterium species was isolated in the operatmg room.<br/> When an air-cleaner was used during the operation, the bacteria and fungi were considerably decreased, especially fungi decreased below the detectable level. To the results indicated that application of an air-cleaner was decreased air-contaminant microbes in the operating room for the dental implant surgery.<br/>

著者

保坂 尚紀 輿 秀利 伊藤 賢 中村 正和 梨本 正恵

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 = Journal of Japanese Society of Oral Implantology (ISSN:09146695)

巻号頁・発行日

vol.13, no.2, pp.395-399, 2000-06-30

参考文献数

11

被引用文献数

1

---

In prophylaxis of postoperative infection, an air-cleaner was used to remove air-contaminant bacteria and fungi in the operating room during dental implant surgery. In general, next to Coagulasenegative staphylococci, the most frequent isolate, Corynebacterium species was isolated in the operatmg room.<br/> When an air-cleaner was used during the operation, the bacteria and fungi were considerably decreased, especially fungi decreased below the detectable level. To the results indicated that application of an air-cleaner was decreased air-contaminant microbes in the operating room for the dental implant surgery.<br/>

著者

山本 雅久 河原 三明 安孫子 宜光

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.15, no.3, pp.323-329, 2002-09-30 (Released:2015-08-20)

参考文献数

27

被引用文献数

1

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The recent advent of improved low-level laser irradiation (LLLI) therapy has promoted interest in clinical implantology. It has been reported that LLLI on bony implant sites might have positive effects on the integration of implants. The biostimulatory effect of cell proliferation and bone formation by LLLI has been investigated, but little is known about the molecular basis of biostimulatory mechanisms. Since LLLI will be useful to support implant therapy, it is important to elucidate the mechanism of the biostimulatory effect of LLLI on bone formation. We previously constructed the cDNA library of mouse osteoblastic cells (MC 3 T 3-E 1), which enhanced gene expression by LLLI using a subtracted gene cloning technology. In the present study, we further analyzed the DNA nucleotide sequence of gene clones, and focused on a gene clone designated MCL-174. The nucleotide sequence of MCL-174 insert was determined and assessed in the standard nucleotide-nucleotide BLAST (blastn) homology-search using NCBI DNA databases. DNA nucleotide sequences of clone MCL-174 inserted DNA exhibited 99% homology with Mus musculus annexin Ⅲ gene. Reverse-transcription PCR analysis showed that the mRNA level was enhanced by LLLI. These findings suggest that LLLI may enhance mRNA transcription and play a role in stimulating proliferation of osteoblasts through the enhancement of annexin Ⅲ gene expression. Annexin Ⅲ was detected in secretory ameloblasts and odontoblasts, and it was thought to be involved in the regulation of cell calcium. These findings suggest that the biostimulatory effect of LLLI on bone formation may relate through gene expression of annexin Ⅲ.

著者

宮本 洋二 藤澤 健司 武知 正晃 桃田 幸弘 長山 勝 山内 英嗣 坂東 永一 日野出 大輔

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.15, no.4, pp.436-445, 2002-12-31 (Released:2015-08-20)

参考文献数

43

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To clarify the effects of clinical factors on the failure (early failure) of osseointegration establishment of titanium implants, we statistically carried out a clinical examination on 373 fixtures of Brånemark implants. Fifteen fixtures (4.0%) failed to establish osseointegration before the fitting of superstructures. Results are summarized as follows: 1.Age and sex did not affect early failure. 2.Although there was no significant difference in the rate of early failure between the maxilla and the mandible, the prognosis of the maxilla, in women, was poorer than that of the mandible. No difference among regions in the maxilla or mandible was detected. 3.Variations of diameters and kinds of fixtures did not affect early failure. 4.In the length of fixture, the prognosis of 10 mm or less of the fixtures was poor, and the prognosis of fixtures of 13 mm or less was poorer in the maxilla. 5.The initial stability of fixtures at installation was deeply relevant to early failure. 6.The healing period between fixture installation and abutment connection did not affect early failure. 7.There was no significant difference in the rate of early failure between smokers and non smokers.

著者

宗像 源博 塩田 真 誉田 栄一 立川 敬子 春日井 昇平 倉林 亨

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.17, no.2, pp.196-201, 2004-06-30 (Released:2015-02-10)

参考文献数

19

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Evaluation of jawbone quality is very important for successful implant treatment; however, a method to evaluate bone quality of the jaw has not been established. Furthermore, at present, bone classifications are relatively rough and subjective methods for pre-operative assessment. This study compared the buccal and the lingual cortical bone mineral densities (BMD), and correlation trabecular BNID and cortical BMD by quantitative computed tomography (QCT). The subjects were 56 patients with mandibular distal extension defect (20 males, 17 pre-menopausal and 19 post-menopausal women;age range 30 to 79 years). The buccal and lingual cortical BMD and the trabecular BMD were measured by QCT. The difference and the correlation among the three groups were estimated. The results were as follows. 1. The buccal cortical BMD was significantly higher than the lingual cortical BMD in the male and pre-menopausal group. However, no significant difference was seen between the buccal and the lingual cortical BMD in the post-menopausal group. 2. The buccal cortical BMD correlated well with the trabecular BMD in the male group. 3. The buccal and the lingual cortical BMD did not correlate with the trabecular BMD in the pre-menopausal group. 4. The buccal cortical BMD correlated significantly with the trabecular BMD in the post-menopausal group. In conclusion, it is important to consider these tendencies of mandibular BMD in dental implant treatment.

著者

山下 宗宏 尾上 雄平 佐野 和男 原 一仁 馬込 正勝

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.17, no.3, pp.331-336, 2004-09-30 (Released:2015-02-10)

参考文献数

20

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Globular titanium with a diameter of 212~250 μm was prepared using the rotating electrode method. It was then sintered under vacuum conditions to produce solid titanium material, to make the implant. We investigated the titanium implant material by evaluating the bond strength of the titanium particles to the titanium implant, the void area between titanium particles, the polarization resistance of titanium particles to the globular titanium implant, and alternating-current (AC) impedance properties. The following findings were obtained. 1. A shear force of about 5N was shown between the globular titanium implant and the titanium particles, although measurement was difficult. 2. The void area between globular titanium particles with a diameter of 212~250 μm ranged from 1.84×10-3 mm2 to 2.56×10-3mm2. 3. The Ecorr range of the titanium and globular titanium implant in 0.9% NaCl and artificial saliva aolution was -201~ -347 mV, and Icorr was 0.04×10-5~1.3×10-5mA/cm2. For titanium particles, Ecorr was -346 mV, and Icorr was 1.04×10-5mA/cm2. 4. The alternating current impedance measurement demonstrated increased corrosion resistance of the titanium material and globular titanium implant, which formed a passive oxide film in 0.9% NaCl and artificial saliva.

著者

永田 勝秀 片山 幸太郎 東條 秀太郎 佐藤 泰生 松沢 耕介

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.18, no.2, pp.264-272, 2005-06-30 (Released:2014-11-15)

参考文献数

17

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We prepared two types of bone defect fillers (BDFs) which were made from a mixture of α-tricalcium phosphate (α-TCP) with chitosan or alginate in solution. A solidifier was added to the mixtures. These solutions were then kneaded to be solidified. The solid substances, named chitosan-BDF and alginate-BDF, were implanted in femurs of guinea pig to study the effects of the BDFs on the processes of bone formation by EPMA. The alginate-BDF was surrounded with growing bone from all directions at 6 months after the operation and seemed to have an affinity to the tissues. However, no degraded or absorbed form of the BDF was observed. In contrast, most of the chitosan-BDF was replaced by growing bone at 6 months. The adjacent part of the BDF to surrounding cortical bone was especially well-absorbed, probably due to being involved in a reabsorption process after ossification. According to the data, both BDFs were shown to have excellent mechanical properties for filling bone defects. Especially, the chitosan-BDF would be useful as bone defect filler because of its induction of ossification and its smooth absorption.

著者

宮本 洋二 藤澤 健司 福田 雅幸 湯浅 哲也 長山 勝 山内 英嗣 河野 文昭 日野出 大輔

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.18, no.2, pp.292-301, 2005-06-30 (Released:2014-11-15)

参考文献数

30

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The purpose of this study was to determine whether clinical success can be achieved with immediate loading in the edentulous maxilla and mandible with Brånemark implants (Nobel Biocare, Goteborg, Sweden) at one year after placement of the implants. The study sample consisted of 18 patients who were edentulous or about to lose all remaining teeth. A total of 118 fixtures were placed in 7 maxillae and 12 mandibles, including one bimaxillary patient. Ninety seven of the 118 fixtures were immediately loaded and 21 fixtures were submerged. Five to 7 fixtures (mean of 5.9 fixtures) supported the prostheses in the maxilla and 4 or 5 fixtures (mean of 4.7 fixtures) in the mandible. All fixtures immediately loaded were placed in the incisor and premolar regions of both maxilla and mandible. The mean lengths of the fixtures in the maxillae and mandibles were 14.8±1.8 mm and,15.6±2.6 mm, respectively.All of 41 immediate loading fixtures in the maxillae showed a placement torque of more than 35 Ncm. Although 5 of 56 fixtures in the mandibles showed a placement torque of 30 Ncm, remaining fixtures showed more than 35 Ncm. Provisional implant-supported fixed prostheses were fabricated in a laboratory from an impression and were placed on the next day after surgery. After a 4-to 7-month healing period, a definitive prosthesis was fabricated and placed. One implant, although still osseointegrated, was removed owing to bone resorption. In the patient, the provisional prosthesis was supported by 4 remaining fixtures;thus the cumulative survival rates for fixtures and prostheses were 99.0%and 100%, respectively, after one year. This clinical report suggests that immediate loading of implant-supported fixed prostheses in the edentulous maxilla and mandible can be a safe and successful treatment as long as patients are carefully and strictly selected.

著者

一柳 あゆみ 中島 幹雄 香月 武

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.19, no.3, pp.312-317, 2006-09-30 (Released:2014-07-01)

参考文献数

15

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We performed dental implant treatment following autogenous bone graft from the iliac bone to the sinus floor for a 68-year-old male patient with severe atrophy of the posterior maxilla. After bone grafting, the sinus floor was lifted up 10 mm to 15 mm. On the 14th day after the operation, fracture of the iliac crest occurred accidentally. An avulsion fracture of the anterior superior iliac spin at the lower part of the donor site was diagnosed. We treated the fracture conservatively, and after four weeks, the patient recovered to be able to go up and down the stairs. Four months later, four implants were inserted in the bone grafted area. For patients with severe atrophy of the posterior maxilla, sinus elevation with iliac bone harvesting is considered to be an effective method. However, there are possible complications associated with iliac bone grafting, such as in this case. Therefore, careful management after such an operation is necessary.

著者

中川 晃成 木村 欣史 一瀬 暢宏 松岡 建介 西村 賢二 井原 功一郎

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 = Journal of Japanese Society of Oral Implantology (ISSN:09146695)

巻号頁・発行日

vol.14, no.2, pp.287-292, 2001-06-30

被引用文献数

49

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We evaluated the validity, using the Dental Prescale system, of implant-retained fixed prosthesis on masticatory efficiency in unilateral free-end partial edentulism, compared with a removable partial denture. The population of this study was as follows: implant-retained fixed prosthesis for unilateral free-end dentition, 7; removable partial denture for unilateral free-end dentition, 7; upper or lower single complete denture and the natural dentition on the opposite side, 5; complete edentulism with complete denture wearing, 5; natural dentition, 7.<br/> In the present study, total occlusal force, the occlusal force support rate of the rehabilitation area, the change of occlusal forces on the teeth nearest the edentulous area, and the asymmetry index were evaluated, and the results were as follows:<br/> 1. Both the total occlusal force and the occlusal force support rate of the implant prosthesis were superior to the removable partial denture.<br/> 2. The occlusal force on the teeth nearest the edentulous area was increased with the removable partial denture, while the implant-retained prosthesis decreased.<br/> 3. The implant-retained prosthesis showed more symmetrical occlusal force than the removable partial denture.<br/> In summary, it was suggested that the implant-retained prosthesis is more suitable than a removable partial denture to obtain the appropriate occlusal force and to protect the residual teeth.

著者

峯崎 恵

雑誌

日本口腔インプラント学会誌 = Journal of Japanese Society of Oral Implantology (ISSN:09146695)

巻号頁・発行日

vol.12, no.3, pp.400-407, 1999-09-30

参考文献数

17

被引用文献数

8

著者

加藤 仁夫 武田 譲 湊 耕一 追川 哲雄 中野 裕理 石井 達郎 金田 隆 水川 一廣 小林 喜平 池田 直 泉 廣次

雑誌

日本口腔インプラント学会誌 = Journal of Japanese Society of Oral Implantology (ISSN:09146695)

巻号頁・発行日

vol.9, no.1, pp.145-153, 1996-03-31

被引用文献数

4