THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY最新文献_第10页

Analysis of the Characteristics of Maxillary Supernumerary Lateral Incisor 上颌余侧切牙特征分析

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.25

Jeungseon Nah, Koeun Lee, Misun Kim, O. Nam, Sung-Hyun Choi, Hyo-seol Lee

{"title":"Analysis of the Characteristics of Maxillary Supernumerary Lateral Incisor","authors":"Jeungseon Nah, Koeun Lee, Misun Kim, O. Nam, Sung-Hyun Choi, Hyo-seol Lee","doi":"10.5933/jkapd.2022.49.1.25","DOIUrl":"https://doi.org/10.5933/jkapd.2022.49.1.25","url":null,"abstract":"This study aimed to investigate a quantitative analysis of the anatomical characteristics of the maxillary supernumerary lateral incisor and its relationship with lateral incisors. Forty-four supernumerary lateral incisors from 43 patients were evaluated for analyzing the position, shape, direction, and relationship between the supernumerary lateral incisor and the normal lateral incisors, using cone-beam computed tomography (CBCT). To compare the size of crown, the mesiodistal width was measured and the Nolla stage was used for evaluating the degree of root development to compare tooth maturity. The supernumerary lateral incisors were in the normal direction at a rate of 90.9%, and in a supplemental shape at a rate of 84.1%. The supernumerary lateral incisor was smaller in size compared to the adjacent lateral incisor and opposite lateral incisor (p < .0001). There was no statistically significant difference in the development stage of root. Based on these results, the supernumerary lateral incisor is similar with the lateral incisor, but has a difference in the size of crown. It is necessary to distinguish the supernumerary lateral incisor from the lateral incisor precisely to reduce clinical complications.","PeriodicalId":22818,"journal":{"name":"THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY","volume":"2012 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86371005","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}

引用次数: 0

Validity of Arch Relationship Measurements in Digital Dental Models 牙弓关系测量在数字牙模型中的有效性

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.14

Jiin Ryu, Byoung-Eun Yang, Hyelim Lee

{"title":"Validity of Arch Relationship Measurements in Digital Dental Models","authors":"Jiin Ryu, Byoung-Eun Yang, Hyelim Lee","doi":"10.5933/jkapd.2022.49.1.14","DOIUrl":"https://doi.org/10.5933/jkapd.2022.49.1.14","url":null,"abstract":"The aim of the present study is to evaluate the validity of orthodontic measurements including tooth width, Bolton ratio, overjet and overbite on the digital dental models. Dental models of the subjects aged 12 to 18 were obtained in 3 different forms, which were conventional stone model, digital model created with Freedom HD model scanner, and digital model produced with CS3600 intraoral scanner. After measurements were made on the models, reliability and reproducibility of the measurements were evaluated by using intraclass correlation coefficient, while validity was assessed with paired t-test. As a result, significant reliability and reproducibility were verified, with intraclass correlation coefficient exceeding 0.750 in all groups. Measurements of the model scanned group showed an adequate validity in overall and anterior Bolton ratio, overjet, and overbite. Intraoral scanned models showed an adequate validity in anterior Bolton ratio, and overjet. Measurement on intraoral scanned digital models can be considered as an alternative for young children who have difficulty in taking impression. Furthermore, careful considerations on measurement error should be made in clinical situations.","PeriodicalId":22818,"journal":{"name":"THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81486154","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}

引用次数: 0

Analysis of the Characteristics of First Permanent Molars with Delayed Eruption 第一恒磨牙延迟出牙的特点分析

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.95

Hosun Lee, Koeun Lee, Misun Kim, O. Nam, Hyo-seol Lee, Sung-Hyun Choi

{"title":"Analysis of the Characteristics of First Permanent Molars with Delayed Eruption","authors":"Hosun Lee, Koeun Lee, Misun Kim, O. Nam, Hyo-seol Lee, Sung-Hyun Choi","doi":"10.5933/jkapd.2022.49.1.95","DOIUrl":"https://doi.org/10.5933/jkapd.2022.49.1.95","url":null,"abstract":"The first permanent molars play a key role in maxillofacial development and occlusion. The purpose of this study is to investigate the characteristics and development stages of first molars with delayed eruption, and to evaluate their associations with congenital missing teeth. Eight-year-old patients who had delayed eruption in their first molars were classified into 75 patients with physical barriers and 77 patients without physical barriers. The development stages of the first and second molars in the delayed area were analyzed using Nolla method from the panoramic radiographs. The relationship between congenital missing teeth and delayed area was also investigated. Delayed eruption of first molars were more common in the maxilla alone. With the presence of physical barriers, male patients showed higher frequency in unilateral cases, while female patients had higher bilateral cases when there was no physical barrier. Delayed development of first molars were observed in delayed eruption area. In the absence of physical barriers, adjacent second molars were also developed slowly and the incidence of congenital missing teeth was high in delayed area. If first molars with delayed eruption are observed, clinical and radiographical follow-ups are necessary for the evaluation of their developmental stages and congenital missing teeth.","PeriodicalId":22818,"journal":{"name":"THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86086521","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}

引用次数: 0

Clinical Management and Short-term Prognosis of Molar-Incisor Malformation Affected Patients: Case Reports 磨牙-门牙畸形患者的临床处理及短期预后:病例报告

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.121

Hyo-Suck Kim, Sumin Lim, Jinyoung Kim

引用次数: 0

Minimally Invasive Techniques for the Treatment of Mucoceles in Young Patients: A Case Series 微创技术治疗年轻患者粘液囊肿:一个病例系列

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.113

Jong-Seok Kim, G. Kim, Jaesik Lee, Hyunjung Kim, Soonhyeun Nam

引用次数: 0

Comparative Validation of the Mixed and Permanent Dentition at Web-Based Artificial Intelligence Cephalometric Analysis 基于web的人工智能头颅测量分析中混合牙列和恒牙列的比较验证

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.85

Sun-Hwa Shin, Donghyun Kim

{"title":"Comparative Validation of the Mixed and Permanent Dentition at Web-Based Artificial Intelligence Cephalometric Analysis","authors":"Sun-Hwa Shin, Donghyun Kim","doi":"10.5933/jkapd.2022.49.1.85","DOIUrl":"https://doi.org/10.5933/jkapd.2022.49.1.85","url":null,"abstract":"This retrospective study aimed to evaluate the difference in measurement between conventional orthodontic analysis and artificial intelligence orthodontic analysis in pediatric and adolescent patients aged 7 - 15 with the mixed and permanent dentition. A total of 60 pediatric and adolescent patients (30 mixed dentition, 30 permanent dentition) who underwent lateral cephalometric radiograph for orthodontic diagnosis were randomly selected. Seventeen cephalometric landmarks were identified, and 22 measurements were calculated by 1 examiner, using both conventional analysis method and deep learning-based analysis method. Errors due to repeated measurements were assessed by Pearson’s correlation coefficient. For the mixed dentition group and the permanent dentition group, respectively, a paired t-test was used to evaluate the difference between the 2 methods. The difference between the 2 methods for 8 measurements were statistically significant in mixed dentition group: APDI, SNA, SNB, Mandibular plane angle, LAFH (p < 0.001), Facial ratio (p = 0.001), U1 to SN (p = 0.012), and U1 to A-Pg (p = 0.021). In the permanent dentition group, 4 measurements showed a statistically significant difference between the 2 methods: ODI (p = 0.020), Wits appraisal (p = 0.025), Facial ratio (p = 0.026), and U1 to A-Pg (p = 0.001). Compared with the time-consuming conventional orthodontic analysis, the deep learning-based cephalometric system can be clinically acceptable in terms of reliability and validity. However, it is essential to understand the limitations of the deep learning-based programs for orthodontic analysis of pediatric and adolescent patients and use these programs with the proper assessment.","PeriodicalId":22818,"journal":{"name":"THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY","volume":"os-39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87226020","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}

引用次数: 1

Changes of Occlusion following the Placement of Preformed Metal Crown to the Permanent First Molar in Children and Adolescents 预成型金属冠在儿童和青少年恒牙第一磨牙上放置后咬合的变化

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.45

Jiwoong Kim, Nanyoung Lee, Myeongkwan Jih, Sangho Lee

{"title":"Changes of Occlusion following the Placement of Preformed Metal Crown to the Permanent First Molar in Children and Adolescents","authors":"Jiwoong Kim, Nanyoung Lee, Myeongkwan Jih, Sangho Lee","doi":"10.5933/jkapd.2022.49.1.45","DOIUrl":"https://doi.org/10.5933/jkapd.2022.49.1.45","url":null,"abstract":"The purpose of this study is to evaluate changes of occlusion following the placement of preformed metal crown in the permanent first molar affected by severe caries or hypomineralization. The study was conducted on 24 patients who met the criteria among the patients with occlusion in the permanent first molar reaching the occlusal plane. Restorative treatment was performed on one first molar using preformed metal crown. Before treatment, immediately after treatment, after 4 weeks, and after 8 weeks, the T-scan Ⅲ was used for measuring distribution of bite force at the maximum intercuspal position, and overbite was measured with digital vernier calipers and change of dental midline was surveyed. After 8 weeks, questionnaires survey was conducted. In most cases, immediately after treatment, the distribution of bite force between the restored side and non-restored side of arch was reversed compared to before treatment, and the overbite was decreased. However, after 4 weeks, bite force of the left and right side was balanced and the distribution of bite force on the restored and non-restored permanent first molars had similar values. Also, the changed overbite and midline were returned to pre-treatment status and there was no significant temporomandibular joint and masticatory discomfort after treatment. In this study, it was confirmed that spontaneous occlusal equilibrium was achieved one month after the placement of preformed metal crown.","PeriodicalId":22818,"journal":{"name":"THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81074058","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}

引用次数: 0

Fracture Resistance of Incisal Tooth Fragment reattached with different Materials and Preparation 不同材料及制备方法对切牙断块再植的抗折性研究

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2022-02-28 DOI: 10.5933/jkapd.2022.49.1.104

Jong-Sik Kim, G. Kim, Jaesik Lee, Hyunjung Kim, Soonhyeun Nam

{"title":"Fracture Resistance of Incisal Tooth Fragment reattached with different Materials and Preparation","authors":"Jong-Sik Kim, G. Kim, Jaesik Lee, Hyunjung Kim, Soonhyeun Nam","doi":"10.5933/jkapd.2022.49.1.104","DOIUrl":"https://doi.org/10.5933/jkapd.2022.49.1.104","url":null,"abstract":"The purpose of this study is to analyze the fracture resistance of reattached tooth according to the resin materials and tooth preparation type under physiological conditions. Uncomplicated crown fracture in the oblique direction was reproduced on the extracted 64 anterior teeth. Depending on the composite resin material, reattachment was performed using a flowable resin and a packable resin. Depending on retentive forms, reattachment was performed using simple reattachment, 1.0 mm × 1.0 mm labial chamfer bevel, 1.0 mm × 1.0 mm lingual chamfer bevel and 1.0 mm × 1.0 mm circumferential bevel. A load was applied to the palatal surface of the tooth using a universal testing machine at an angle of 125 degree, which is the interincisal angle of normal children. Under the masticatory pressure condition, fracture resistance of lingual chamfer groups was 28.28 ± 7.41 MPa and 27.54 ± 4.45 MPa, which was significantly higher than those of simple reattachment groups, 17.21 ± 5.87 MPa and 20.10 ± 6.00 MPa, in both flowable and packable resin groups. When considering the lingual force similar to masticatory pressure, the fragment retention was significantly improved when the lingual chamfer was formed compared to the simple reattachment. Clinicians may consider the design of the lingual chamfer in order to improve fracture resistance to masticatory pressure during fragment reattachment.","PeriodicalId":22818,"journal":{"name":"THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88714838","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}

引用次数: 0

Assessment of Fluoride Release through Dentin Adhesive in the Alkasite Restorative Material and Giomer 碱性钙石修复材料和异构体牙本质黏合剂释放氟的研究

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2021-11-30 DOI: 10.5933/jkapd.2021.48.4.367

Hae-Ri Kim, Howon Park, Juhyun Lee, H. Seo

引用次数: 0

Effect of Aluminum Chloride Hemostatic Agent on Bonding Strength of RMGIC in Primary Tooth 氯化铝止血剂对乳牙RMGIC粘接强度的影响

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY Pub Date : 2021-11-30 DOI: 10.5933/jkapd.2021.48.4.397

S. Woo, Jisun Shin, Joonhaeng Lee, Miran Han, Jong Soo Kim

{"title":"Effect of Aluminum Chloride Hemostatic Agent on Bonding Strength of RMGIC in Primary Tooth","authors":"S. Woo, Jisun Shin, Joonhaeng Lee, Miran Han, Jong Soo Kim","doi":"10.5933/jkapd.2021.48.4.397","DOIUrl":"https://doi.org/10.5933/jkapd.2021.48.4.397","url":null,"abstract":"The purpose of this study was to evaluate the effect of a hemostatic agent containing aluminum chloride on the shear bond strength of resin-modified glass ionomer cement (RMGIC) to the dentin of primary teeth. Thirty-six extracted non-carious human primary teeth were collected in this study. Dentin surfaces were cut and polished. The specimens were randomly divided into 4 groups; group I: RMGIC without conditioning; group II: polyacrylic acid (PAA), RMGIC; group III: aluminum chloride, RMGIC; group IV: aluminum chloride, PAA, RMGIC. All teeth were thermocycled between 5.0℃ and 55.0℃ for 5000 cycles. Fifteen specimens from each group were subjected to shear bond strength test and 3 specimens from each group were inspected using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy. The mean shear bond strength of each group was as follows: 4.04 ± 0.88 MPa in group I, 8.29 ± 1.40 MPa in group II, 1.39 ± 0.47 MPa in group III, 6.24 ± 2.76 MPa in group IV. There were significant differences among all groups (p < 0.001). SEM image of the dentinal tubules were partially exposed in group III and group IV. Fully exposed dentinal tubules were found in group II. In conclusion, aluminum chloride decreased the shear bond strength of RMGIC to dentin, regardless of PAA conditioning.","PeriodicalId":22818,"journal":{"name":"THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88799840","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}

引用次数: 0