Purpose: The objectives of this study were to present a novel surgical technique for buccal bone plate regeneration and to evaluate the dimensions of the buccal bone and aesthetic parameters over a 2to 4-year follow-up period. Materials and methods: Twenty-eight patients participated in this prospective clinical study. After tooth/implant extraction, labial bone defects were grafted with xenogenic bone substitute and covered with a collagen membrane. An implant was placed eight months after the reconstruction surgery and loaded three months later. An evaluation of the hard and soft tissues was performed after a mean of 3 years of follow-up. Cone-beam computed tomography was performed to examine the stability over time and measure the thickness of the reconstructed buccal bone plate. The Pink Aesthetic Score was used to evaluate the aesthetic outcome of the peri-implant soft tissues. Patient satisfaction with aesthetics was also evaluated with a questionnaire 15 months after loading the implant. Results and conclusions: All patients attended the follow-up examination. At the follow-up examination, the mean of the reconstructed facial bone thickness was greater than 2 mm. Based on the examinations using the Pink Aesthetic Score, 10.7% of the cases had a good outcome (> 9 and < 12), and twenty-five out of 28 (89.3%) had a perfect result (> 12). Eleven patients out of 28 indicated good satisfaction, and 17 indicated excellent satisfaction fifteen months after the implant loading. *Correspondence to: Marzio Todisco, via Agello 68/c Desenzano del Garda 25015 Italy, Tel: 39-030-990-1158, E-mail: marzio@marziotodisco.com
目的:本研究的目的是提出一种颊骨板再生的新手术技术，并在2至4年的随访期间评估颊骨的尺寸和美学参数。材料与方法:28例患者参与前瞻性临床研究。拔牙/种植体后，用异种骨替代物移植唇骨缺损，并覆盖胶原膜。重建手术后8个月植入植入物，3个月后植入。在平均3年的随访后对硬组织和软组织进行评估。锥形束计算机断层扫描检查稳定性随时间的推移，并测量重建颊骨板的厚度。采用粉红色美学评分评价种植体周围软组织的美学效果。装填种植体15个月后，通过问卷调查评估患者对美学的满意度。结果与结论:所有患者均参加了随访检查。随访时，重建面骨厚度的平均值大于2mm。根据粉红色美学评分检查，10.7%的患者预后良好(> 9和< 12)，28例患者中有25例(89.3%)预后良好(> 12)。28例患者中有11例满意度较好，17例在种植体装载15个月后满意度极好。*通信:Marzio Todisco，通过Agello 68/c Desenzano del Garda 25015意大利，电话:39-030-990-1158，电子邮件:marzio@marziotodisco.com
{"title":"Immediate alveolar buccal bone plate reconstruction. A simplified technique with 28 consecutive cases and 2- to 4-year follow-up. Case reports with hard tissue and aesthetic evaluation","authors":"M. Todisco","doi":"10.15761/jdrr.1000108","DOIUrl":"https://doi.org/10.15761/jdrr.1000108","url":null,"abstract":"Purpose: The objectives of this study were to present a novel surgical technique for buccal bone plate regeneration and to evaluate the dimensions of the buccal bone and aesthetic parameters over a 2to 4-year follow-up period. Materials and methods: Twenty-eight patients participated in this prospective clinical study. After tooth/implant extraction, labial bone defects were grafted with xenogenic bone substitute and covered with a collagen membrane. An implant was placed eight months after the reconstruction surgery and loaded three months later. An evaluation of the hard and soft tissues was performed after a mean of 3 years of follow-up. Cone-beam computed tomography was performed to examine the stability over time and measure the thickness of the reconstructed buccal bone plate. The Pink Aesthetic Score was used to evaluate the aesthetic outcome of the peri-implant soft tissues. Patient satisfaction with aesthetics was also evaluated with a questionnaire 15 months after loading the implant. Results and conclusions: All patients attended the follow-up examination. At the follow-up examination, the mean of the reconstructed facial bone thickness was greater than 2 mm. Based on the examinations using the Pink Aesthetic Score, 10.7% of the cases had a good outcome (> 9 and < 12), and twenty-five out of 28 (89.3%) had a perfect result (> 12). Eleven patients out of 28 indicated good satisfaction, and 17 indicated excellent satisfaction fifteen months after the implant loading. *Correspondence to: Marzio Todisco, via Agello 68/c Desenzano del Garda 25015 Italy, Tel: 39-030-990-1158, E-mail: marzio@marziotodisco.com","PeriodicalId":321276,"journal":{"name":"Journal of Dental Research and Reports","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117258755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Swapnil V Chandekar, Shishir H. Singh, Rajesh S. Podar, Shashank N Babel, Jinal J. Shah
{"title":"Rehabilitation of endodontically treated tooth with anatomic post and core: A novel approach","authors":"Swapnil V Chandekar, Shishir H. Singh, Rajesh S. Podar, Shashank N Babel, Jinal J. Shah","doi":"10.15761/jdrr.1000107","DOIUrl":"https://doi.org/10.15761/jdrr.1000107","url":null,"abstract":"","PeriodicalId":321276,"journal":{"name":"Journal of Dental Research and Reports","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128065943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Challenge for open accessed journals","authors":"Michael W. Roberts","doi":"10.15761/jdrr.1000111","DOIUrl":"https://doi.org/10.15761/jdrr.1000111","url":null,"abstract":"","PeriodicalId":321276,"journal":{"name":"Journal of Dental Research and Reports","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129628347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this paper was to describe a case of inferior alveolar nerve infection-induced paresthesia and to discuss the most appropriate diagnostic tools. Although radiographically, the periapical lesion didn’t appear to be in close vicinity to the mandibular nerve canal, the persistence of the symptomatology led to the suspicion of an inferior alveolar nerve compression. A cone-beam computed tomography (CBCT) scan showed an impressive lesion with great bone destruction, in direct contact with the inferior alveolar nerve, compressing it. Besides a complete medical history, a CBCT scan may be crucial to identify the cause of the paresthesia, supporting the clinical exam and preventing an irreversible nerve injury.
{"title":"Inferior alveolar nerve paresthesia caused by periapical infection: A case report","authors":"Inês Ferreira, P. Rodrigues, Irene Pina-Vaz","doi":"10.15761/dcrr.1000106","DOIUrl":"https://doi.org/10.15761/dcrr.1000106","url":null,"abstract":"The aim of this paper was to describe a case of inferior alveolar nerve infection-induced paresthesia and to discuss the most appropriate diagnostic tools. Although radiographically, the periapical lesion didn’t appear to be in close vicinity to the mandibular nerve canal, the persistence of the symptomatology led to the suspicion of an inferior alveolar nerve compression. A cone-beam computed tomography (CBCT) scan showed an impressive lesion with great bone destruction, in direct contact with the inferior alveolar nerve, compressing it. Besides a complete medical history, a CBCT scan may be crucial to identify the cause of the paresthesia, supporting the clinical exam and preventing an irreversible nerve injury.","PeriodicalId":321276,"journal":{"name":"Journal of Dental Research and Reports","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125063423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The objective of this study was to assess the clinical effectiveness of teleorthodontic treatment with clear aligners on maxillary and mandibular incisor alignment utilizing the SmileDirectClub® teleorthodontic platform, to objectively measure differences in clinical effectiveness between treatment supervised by general practitioners versus orthodontic specialists and to subjectively consider patient satisfaction after the teleorthodontic delivery of clear aligner treatment and the relationship between satisfaction and whom the treatment was provided by. A sample of 50 patients determined by inclusion and exclusion criteria were randomly selected from an initial sample of 200 patients. The pre and posttreatment maxillary and mandibular arch stereolithography (STL) files taken from the iTero digital scans were imported into computer software for measurement. Point to point millimetric measurement of crowding or spacing was measured from the distal of one maxillary or mandibular lateral incisor to the distal of the opposite lateral incisor on the pre and posttreatment models. Lastly, the subjective measure of patient satisfaction was tabulated for each patient. General linear models found treatment effectiveness to achieve statistical significance in the multivariate tests conducted. There was no statistically significant difference between treatment supervised by general practitioners versus orthodontic specialists. Lastly, Fisher’s exact test determined that there was no significant association between satisfaction and who the respondent was treated by. *Correspondence to: Marc B Ackerman, American Teledentistry Association, 9 Roberts Road, Wellesley Hills, MA, USA, Tel: 1-781-304-4409; E-mail: admin@americanteledentistry.org
本研究的目的是评估使用SmileDirectClub®远端正畸平台使用透明矫正器对上颌和下颌切牙进行矫正的临床效果。客观地衡量全科医生监督治疗与正畸专家监督治疗的临床效果差异，主观上考虑患者在正畸提供透明矫正器治疗后的满意度以及满意度与治疗提供者之间的关系。从最初的200例患者中随机抽取50例符合纳入和排除标准的患者。将处理前和处理后的上颌和下颌弓立体光刻(STL)文件从iTero数字扫描中导入计算机软件进行测量。在治疗前和治疗后模型上，测量从上颌或下颌侧切牙远端到对侧切牙远端之间的点对点拥挤或间隔的毫米测量。最后，对每位患者的主观满意度进行了制表。一般线性模型发现治疗效果在进行的多变量检验中达到统计学显著性。全科医生监督的治疗与正畸专家监督的治疗之间没有统计学上的显著差异。最后，Fisher的精确检验确定了满意度和被调查者接受的治疗之间没有显著的关联。*通讯:Marc B Ackerman，美国电视医学协会，9 Roberts Road, Wellesley Hills, MA, USA, Tel: 1-781-304-4409;电子邮件:admin@americanteledentistry.org
{"title":"Teleorthodontic treatment with clear aligners: An analysis of outcome in treatment supervised by general practitioners versus orthodontic specialists","authors":"Marc B. Ackerman","doi":"10.15761/jdrr.1000114","DOIUrl":"https://doi.org/10.15761/jdrr.1000114","url":null,"abstract":"The objective of this study was to assess the clinical effectiveness of teleorthodontic treatment with clear aligners on maxillary and mandibular incisor alignment utilizing the SmileDirectClub® teleorthodontic platform, to objectively measure differences in clinical effectiveness between treatment supervised by general practitioners versus orthodontic specialists and to subjectively consider patient satisfaction after the teleorthodontic delivery of clear aligner treatment and the relationship between satisfaction and whom the treatment was provided by. A sample of 50 patients determined by inclusion and exclusion criteria were randomly selected from an initial sample of 200 patients. The pre and posttreatment maxillary and mandibular arch stereolithography (STL) files taken from the iTero digital scans were imported into computer software for measurement. Point to point millimetric measurement of crowding or spacing was measured from the distal of one maxillary or mandibular lateral incisor to the distal of the opposite lateral incisor on the pre and posttreatment models. Lastly, the subjective measure of patient satisfaction was tabulated for each patient. General linear models found treatment effectiveness to achieve statistical significance in the multivariate tests conducted. There was no statistically significant difference between treatment supervised by general practitioners versus orthodontic specialists. Lastly, Fisher’s exact test determined that there was no significant association between satisfaction and who the respondent was treated by. *Correspondence to: Marc B Ackerman, American Teledentistry Association, 9 Roberts Road, Wellesley Hills, MA, USA, Tel: 1-781-304-4409; E-mail: admin@americanteledentistry.org","PeriodicalId":321276,"journal":{"name":"Journal of Dental Research and Reports","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125871528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Regenerative endodontic procedures (REP) on teeth with necrotic pulps and open apices require robust disinfection. The purpose of this case report is to present clinical and radiographic findings of a regenerative endodontic procedure that utilizes MTAD for single-visit disinfection of a tooth with necrotic pulp and open apex with 4-year follow-up. A maxillary central incisor of a 7-year-old girl was avulsed and replanted. The tooth developed pulpal necrosis and symptomatic apical periodontitis. After access preparation into the empty chamber, the canal was irrigated with 5.25% NaOCl followed by BioPure MTAD (Dentsply, Tulsa Dental Specialties, Tulsa, OK). Intracanal bleeding was stimulated. 3 mm of Mineral Trioxide Aggregate (MTA) was placed directly over the clot and access was permanently restored with composite. Clinical examination at 1 year and 6 months showed a closed apex with no sensitivity to percussion or palpation. After 4 years, the tooth was asymptomatic and responsive to both cold and electric pulp testing. Potential differences in angulation between preoperative and recall images were corrected with a geometrical imaging program, NIH ImageJ with TurboReg plug-in. The present case demonstrates REP of a tooth with necrotic pulp and open apex in a single visit with MTAD disinfection. *Correspondence to: Rita Hung, Department of Endodontics, School of Dentistry, Loma Linda University, USA, E-mail: drhungendo@gmail.com Received: January 12, 2019; Accepted: January 21, 2019; Published: January 25, 2019 Introduction Pulpal status and degree of root development are major factors in treatment planning for teeth requiring vital pulp treatment or root canal treatment [1]. Vital pulp treatment can be performed on teeth with open and closed apices. Permanent teeth with closed apices are routinely endodontically treated with a high rate of long-term success [2]. However, teeth with immature and often divergent apices are not suitable for routine endodontic techniques due to large diameter apical foramens and thin dentinal walls susceptible to root fracture [3]. Onevisit or two-visit mineral trioxide aggregate (MTA) apexification is currently used in teeth with necrotic pulps and open apices [3] with a high success rate [4]. However, this procedure addresses only technical issues involved in treatment of these teeth and does not completely eliminate the chance for root fracture [5]. There is a growing body of evidence suggesting the possibility of bringing vital tissues into the pulp space of teeth with necrotic pulps and open apices, along with continued growth of the root and thickening of the root canals walls [6]. Hargreaves et al. [3] identified three components necessary for the success of this procedure: stem cells, signaling molecules and a three-dimensional physical scaffold that can support cell growth and differentiation. Regenerative endodontic procedures are only possible when the root canal space is completely disinfected, and a mi
洪荣(2019)再生牙髓治疗与MTAD消毒对未成熟脱脱牙的影响:4年对照[J]中华口腔医学杂志，2019 doi: 10.15761/ jdr .1000109病例报告:一名7岁女孩在私人牙髓治疗诊所评估和治疗上颌右中切牙。病人的母亲报告说，牙齿被撕掉前三天访问牙髓办公室。患者的正畸医师用氯己定(CHX)冲洗牙齿，口腔外干燥时间为60分钟。他用不锈钢丝和托槽固定牙齿，并将患者转介进行牙髓检查。病人的病史与此无关。口腔外检查未见异常或不对称。临床检查显示正畸稳定，牙#8无变色或骨折。牙齿触诊触痛，冷牙或电牙髓试验(EPT)无反应。相邻的牙齿对活力测试反应正常。x线检查显示牙周韧带间隙增宽(图1A)。三周后进行随访检查，活力测试没有任何变化。根据临床及影像学表现，诊断牙髓坏死及根尖周围诊断为症状性根尖牙周炎。从患者母亲处获得了使用MTAD进行再生的书面知情同意。局部麻醉用2%利多卡因1:10万肾上腺素和4%阿替卡因1:10万肾上腺素。橡胶坝布置完毕后，准备了一个通道腔。进入根管后，发现一个没有重要组织或血液的空腔。工作长度是通过在根管内放置一个大锉刀并通过x光片确认来确定的。用大锉轻微修整管壁，用约10 mL 5.25% NaOCl冲洗管壁，用纸点干燥。将1 mL MTAD放入管中，静置5分钟。然后用4ml的MTAD冲洗管，用纸点干燥。将预弯曲的ISO #25 k -锉延长2毫米，以刺激牙骨质-牙釉质连接处(CEJ)以下3毫米处的出血。三到四毫米的灰色三氧化矿骨料(MTA) (Dentsply, Tulsa Dental Specialties, Tulsa, OK)轻轻凝结在血凝块上(图1B)。然后用粘结复合材料修复牙齿。6个月后患者返回根管办公室重新评估。根据x线检查，根尖闭合，患者报告无疼痛或症状。1年零6个月后，鼻尖闭合，患者继续无症状(图2A)。在2年的随访中，发现牙齿变色，并使用过硼酸钠/生理盐水膏进行步行漂白治疗。一周后，使用粘结复合修复修复与患者相邻牙列和通道匹配的8号阴影。2年零6个月后，8号牙继续无症状，对叩诊或触诊试验无敏感性。此时的活力测试显示对寒冷和EPT都有积极的反应。4年后，8号牙继续对低温和EPT有积极反应，对敲击或触诊无敏感性(图2B)，冠无变色(图2C)。使用ImageJ软件(版本1.51;国家卫生研究院，Bethesda, MD)和插件应用TurboReg(生物医学成像组，瑞士联邦理工学院，洛桑，VD，瑞士)，方法由Bose等人描述[5]。通过术后x线片和4年回忆x线片测量和比较牙根长度和剩余牙本质厚度。牙根长度变化不大，剩余牙本质厚度增加了175%。本病例报告展示了一种成功的治疗方案撕脱的恒牙坏死髓和不成熟的尖端。它强调了病例选择，彻底消毒和适当治疗的重要性，以实现持续的根尖发育和牙髓坏死的牙的REP。与文献中报道的许多病例相似，这种再生根管治疗成功的优势是患者年龄小，牙齿发育不成熟，牙尖开放，壁薄，根短。Estefan等人[18]报道，年龄越小、术前根尖直径越宽的患者更适合进行血运重建手术，从而导致根厚、根长和根尖狭窄的增加。图1所示。
{"title":"Regenerative Endodontic Procedure (REP) in single session with MTAD disinfection on immature avulsion tooth: 4-year control","authors":"R. Hung, M. Torabinejad","doi":"10.15761/DCRR.1000109","DOIUrl":"https://doi.org/10.15761/DCRR.1000109","url":null,"abstract":"Regenerative endodontic procedures (REP) on teeth with necrotic pulps and open apices require robust disinfection. The purpose of this case report is to present clinical and radiographic findings of a regenerative endodontic procedure that utilizes MTAD for single-visit disinfection of a tooth with necrotic pulp and open apex with 4-year follow-up. A maxillary central incisor of a 7-year-old girl was avulsed and replanted. The tooth developed pulpal necrosis and symptomatic apical periodontitis. After access preparation into the empty chamber, the canal was irrigated with 5.25% NaOCl followed by BioPure MTAD (Dentsply, Tulsa Dental Specialties, Tulsa, OK). Intracanal bleeding was stimulated. 3 mm of Mineral Trioxide Aggregate (MTA) was placed directly over the clot and access was permanently restored with composite. Clinical examination at 1 year and 6 months showed a closed apex with no sensitivity to percussion or palpation. After 4 years, the tooth was asymptomatic and responsive to both cold and electric pulp testing. Potential differences in angulation between preoperative and recall images were corrected with a geometrical imaging program, NIH ImageJ with TurboReg plug-in. The present case demonstrates REP of a tooth with necrotic pulp and open apex in a single visit with MTAD disinfection. *Correspondence to: Rita Hung, Department of Endodontics, School of Dentistry, Loma Linda University, USA, E-mail: drhungendo@gmail.com Received: January 12, 2019; Accepted: January 21, 2019; Published: January 25, 2019 Introduction Pulpal status and degree of root development are major factors in treatment planning for teeth requiring vital pulp treatment or root canal treatment [1]. Vital pulp treatment can be performed on teeth with open and closed apices. Permanent teeth with closed apices are routinely endodontically treated with a high rate of long-term success [2]. However, teeth with immature and often divergent apices are not suitable for routine endodontic techniques due to large diameter apical foramens and thin dentinal walls susceptible to root fracture [3]. Onevisit or two-visit mineral trioxide aggregate (MTA) apexification is currently used in teeth with necrotic pulps and open apices [3] with a high success rate [4]. However, this procedure addresses only technical issues involved in treatment of these teeth and does not completely eliminate the chance for root fracture [5]. There is a growing body of evidence suggesting the possibility of bringing vital tissues into the pulp space of teeth with necrotic pulps and open apices, along with continued growth of the root and thickening of the root canals walls [6]. Hargreaves et al. [3] identified three components necessary for the success of this procedure: stem cells, signaling molecules and a three-dimensional physical scaffold that can support cell growth and differentiation. Regenerative endodontic procedures are only possible when the root canal space is completely disinfected, and a mi","PeriodicalId":321276,"journal":{"name":"Journal of Dental Research and Reports","volume":"243 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124529675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Kamasaki, Keigo Imamura, Haruka Nishimata, M. Nishiguchi, T. Fujiwara
We conducted morphologic investigation of dentinogenesis imperfecta (DI) primary teeth of a 10-year-old patient with osteogenesis imperfecta (OI) using light microscopy and scanning electron microscopy and then performed mineral composition analysis of dentin using Raman spectroscopy. In the DI teeth, a number of cracks and fractures were observed not only in the dentin but in the enamel, and irregular dentinal tubules were remarkable in the internal area of the mantle dentin layer. The circumpulpal dentin of DI teeth was significantly different from that of the control teeth. Results of Raman analysis showed that quantitative differences in the mineral content (carbonate and phosphate) between DI teeth and the control were not significant. However, the amount of matrix (amide I of collagen) was decreased in DI teeth. The DI teeth were found to have increased fragility in both dentin and enamel, it might be due to decreased type I collagen formation. *Correspondence to: Yoko Kamasaki, Department of Paediatric Dentistry, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan, Tel: +81-95-819-7675; Fax: +81-95-819-7675; E-mail: ichiro@nagasaki-u.ac.jp
{"title":"Study of enamel and dentin in primary teeth with dentinogenesis imperfecta type I: A case report","authors":"Y. Kamasaki, Keigo Imamura, Haruka Nishimata, M. Nishiguchi, T. Fujiwara","doi":"10.15761/jdrr.1000110","DOIUrl":"https://doi.org/10.15761/jdrr.1000110","url":null,"abstract":"We conducted morphologic investigation of dentinogenesis imperfecta (DI) primary teeth of a 10-year-old patient with osteogenesis imperfecta (OI) using light microscopy and scanning electron microscopy and then performed mineral composition analysis of dentin using Raman spectroscopy. In the DI teeth, a number of cracks and fractures were observed not only in the dentin but in the enamel, and irregular dentinal tubules were remarkable in the internal area of the mantle dentin layer. The circumpulpal dentin of DI teeth was significantly different from that of the control teeth. Results of Raman analysis showed that quantitative differences in the mineral content (carbonate and phosphate) between DI teeth and the control were not significant. However, the amount of matrix (amide I of collagen) was decreased in DI teeth. The DI teeth were found to have increased fragility in both dentin and enamel, it might be due to decreased type I collagen formation. *Correspondence to: Yoko Kamasaki, Department of Paediatric Dentistry, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan, Tel: +81-95-819-7675; Fax: +81-95-819-7675; E-mail: ichiro@nagasaki-u.ac.jp","PeriodicalId":321276,"journal":{"name":"Journal of Dental Research and Reports","volume":"207 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113999257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：