• Title/Summary/Keyword: 치수절제술

Search Result 19, Processing Time 0.032 seconds

The Effect of Estrogen Deficiency on Rat Pulpodentinal Complex (에스트로겐 호르몬 결핍 백서에서의 상아-치수 복합체의 변화에 관한 연구)

  • Kim, Mi-Ri;Yang, Won-Kyung;Baek, Jin;Kim, Jong-Jin;Kim, Won-Kyung;Lee, Young-Kyoo
    • Restorative Dentistry and Endodontics
    • /
    • v.30 no.5
    • /
    • pp.402-408
    • /
    • 2005
  • The purpose of this study was to investigate the effects of estrogen deficiency on pulpodentinal complex of tooth in ovariectomized rats. Thirty female Sprague-Dawley rats, 10 weeks old, were used. Rats were grouped into two groups. One group (n = 15) was subjected to sham surgery (SHAM) and the other group (n = 15) was ovariectomized bilaterally (OVX). Animals were sacrificed 12 weeks later, and their mandibular molars and associated periodontal supporting tissues were dissected out, and fixed in $10\%$ buffered formalin. For comparison of groups, immunostained for osteonectin. Histomorphometrical measurement of change of teeth was performed using an image analysis system and paired t-test was used and the level of significance for overall differences was set at p < 0.05. In immunostaining of osteonectin, they were significantly different from each other. The predentin thickness in OVX rats was wider than in SHAM rats. And in SHAM rats, osteonectin was more specifically stained in predentin areas than in OVX rats. These results indicate that estrogen deficiency increased the unmineralized predentin areas and decreased osteonectin content in pulpal tissues in rats. If our result is applicable to human studies, odotoblast is affected by estrogen deficiency.

ROOT CANAL TREATMENT ON PRIMARY TEETH USING NICKEL-TITANIUM NOTARY FILES (회전식 nickel-titanium file을 이용한 유치의 근관치료)

  • Seo, Ju-Hee;Lee, Kwang-Hee;Kim, Dae-Eop;Yang, Kye-Sik
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.28 no.4
    • /
    • pp.620-625
    • /
    • 2001
  • The pulpectomy or root canal treatment on primary teeth is to be done when there is evidence of chronic in flammation or necrosis in the radicular pulp. Due to the tortuous and ribbon-shaped anatomy of the primary teeth, the instrumentation of endodontic hand files and barbed broaches is not an easy procedure. Recently, many automatic Ni-Ti rotary instruments have been developed and has made endodontic treatment easier and faster. This report describes two cases of root canal treatment on primary molars using Ni-Ti rotary files. The cervical constricture was eliminated by the crown-down method, as smaller file proceeded unhindered into the apical third of the canal. In addition, the crown-down technique enhanced the efficacy of the endodontic irrigant. The use of rotary instrumentation for primary teeth seemed to be a more effective way to debride the uneven walls of primary teeth.

  • PDF

THE INDUCTION OF BONE REGENERATION AT FURCATION LESIONS WITH PULPECTOMY AND FURCATION CURETTAGE IN PRIMARY MOLARS (유구치 치근분지부 병소의 치수절제술과 소파술에 의한 골재생)

  • Lee, Seung-Hyun;Woo, Youn-Sun;Kim, Jae-Moon;Jeong, Tae-Sung;Kim, Shin
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.32 no.4
    • /
    • pp.628-633
    • /
    • 2005
  • Deep caries in primary molars without early intervention frequently induce a pulpal disease and consequent furcation lesion with fistulous openings Up to now, majority of the textbooks on pediatric dentistry and literatures have described that extraction of the inflicted teeth is indicated for these cases and in reality these teeth have usually been extracted in the dental clinics. However when we recognize the excellent capacity of bone regeneration in children and the presence of numerous accessory canals at furcation areas, the removal of infection source in pulp by pulpectomy and inflammatory granulation tissues at furcation areas by furcal curettage might open the possibility of rapid healing at the furcation regions. In this report, 10 cases of primary molars in 3 to 6-year-old children with fistulous openings and furcation lesions in moderate size of 2 to 4mm in depth radiolucency at furcation lesion have been chosen. After pulpectomy and furcal curettage, evident bone regeneration was detected radiographically in all cases. Through the cases, we came to realize that all the cases previously described are not the indications of extraction and this approach could make many cases with pulp and furca combined lesions survive and remain healthy in the children's dental arches. However, in order for this approach to acquire objective appropriateness, it is thought that more scrupulous evaluation is desirable on the various factors regarding the indication such as the extent of furcation lesions, absorption status of teeth, amount of covering bone on succeeding teeth and so on.

  • PDF

Pulp Treatment of Triple Tooth in Primary Dentition: Two Case Reports (유치열에 나타난 삼중치에서 치수 치료 : 증례 보고)

  • Jeong, Hankeul;Lee, Nanyoung;Lee, Sangho
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.43 no.2
    • /
    • pp.192-199
    • /
    • 2016
  • Triple tooth is rare in primary dentition; it is the abnormal fusion of three teeth. There are a few reports of double teeth, but triple teeth are rare. These multiple teeth create several clinical problems, not only esthetic problems but also a high caries susceptibility, congenital missing permanent tooth germ(s), orthodontic problems, and periodontal problems. They also make it difficult to perform pulp treatment because of the complex tooth structure. A 1-year 7-month-old male underwent a partial pulpotomy with mineral trioxide aggregate (MTA) when pulp exposure caused by deep caries occurred at a maxillary anterior triple tooth in the first case. The second case was a 1-year 9-month-old male presenting with a fracture line at a mandibular anterior triple tooth. After removing the fractured fragment, a pulpectomy was performed at the remaining primary lateral incisors. Specific complications were not observed during 24 and 6 months of follow-up, respectively.

Consideration of primary molar's root and root canal for pulpectomy treatment (치수절제술 시 고려해야 할 유구치 치근과 근관)

  • MAH, YON-JOO
    • The Journal of the Korean dental association
    • /
    • v.57 no.8
    • /
    • pp.474-479
    • /
    • 2019
  • The purpose of the pulp treatment is to make the function of the primary molar in the oral cavity possible for as long as possible until the exfoliation of the tooth or the development of the occlusion is as long as possible. The pulpectomy is a relatively common procedure for the pediatric dentist in the clinic with dental care of the children nowadays. Primary molar is morphologically more susceptible to dental caries than permanent tooth, and the dental pulp treatment is frequently performed. Furthermore, unlike permanent teeth, the root canal has a large degree of curvature and morphological diversity and complexity, careful consideration is needed. Therefore, it is very important to comprehensively understand the morphological characteristics and diversity of the root and root canals for the successful pulp treatment of the primary molars.

  • PDF

A Retrospective Study on the Effect of Pulp Treatment on the Exfoliation of Primary Teeth (유치 치수치료가 치아 탈락에 미치는 영향에 관한 후향적 연구)

  • Sejung Bang;Miran Han;Jongbin Kim;Junhaeng Lee;Jongsoo Kim;Jisun Shin
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.50 no.1
    • /
    • pp.24-34
    • /
    • 2023
  • The aim of this study was to retrospectively analyze the effects of pulp treatment on exfoliation of primary teeth and its related factors. In this study, 167 teeth of 97 patients aged 6 months to 12 years who were treated with pulp treatment at Dankook Dental Hospital were selected, and information related to pulp treatment and tooth loss was collected. The included subjects were 72 primary anterior teeth (43.1%) and 95 primary posterior teeth (56.9%), of which 56 were males (57.7%) and 41 females (42.3%). The mean follow-up period was 106.1 ± 38.7 months, and the mean age at pulp treatment was 34.8 ± 15.4 months for primary anterior teeth and 69.1 ± 25.1 months for primary posterior teeth. Unilaterally pulpectomized teeth were significantly exfoliated earlier than the same tooth on the opposite side (p < 0.05). Also, in the case of teeth with periapical lesions, despite pulp treatment, the probability of extraction due to infection has been increased on primary anterior teeth (p < 0.05), but not on posterior teeth (p > 0.05). Pulpectomized teeth were lost earlier, an average of 7.8 months for primary anterior teeth and 8.5 months for primary posterior teeth. Early loss of the primary tooth can lead to space loss and premature eruption of the successor, so this can be considered when planning or performing treatment of the primary tooth.

Comparative Histologic Study of 3-Root Canal Filling Materials for Dog's Teeth (성견 치아의 치수절제술 후 3가지 근관충전재에 따른 조직학적 반응의 비교)

  • Kim, Byurira;Kim, Ik-Hwan;Shin, Yooseok;Song, Je Seon
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.46 no.3
    • /
    • pp.255-264
    • /
    • 2019
  • Endodontic treatment of primary molars is a great challenge to the dentists because of their complex morphology. However, there have been limited controlled in vivo studies about filling materials for primary teeth. Hence, the aim of this study is to evaluate and compare histologic responses of different calcium hydroxide canal filling materials that are used in daily clinical practice. Pulpectomies were performed in 132 teeth of the dogs. The root canals were randomly filled with either $Vitapex^{(R)}$ (n = 44), $Metapex^{(R)}$ (n = 44), or $Metapaste^{(R)}$ (n = 44). After 4 or 13 weeks, respectively after operation, the dogs were sacrificed, and teeth were processed for histologic examinations. Inflammatory reaction was evaluated and scored in a blind manner. The Fisher's exact test and Kruskal-Wallis test were used to compare the tested groups. In 4-week-group, all inflammatory responses were in normal range except for fibrosis. In 13-week-group, increased response to various inflammation reaction was shown compared to the 4-week-group. However, there were no statically significant differences between the tested groups in all inflammatory reaction. Overall, there were no significant differences among three materials in responses of apical tissues and all of them showed favorable tissue responses.

A SURVEY ON THE PREOPERATIVE CONDITIONS OF ENDODONTICALLY TREATED FIRST MOLARS IN CHILDREN AND ADOLESCENTS (소아청소년기에 치수치료를 받은 제1대구치의 술전 상태 조사)

  • Lee, Soon-Young;Lee, Kyung-Ho;Noh, Hong-Seok;Jeong, Tae-Sung;Kim, Shin
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.38 no.4
    • /
    • pp.376-382
    • /
    • 2011
  • In clinical dentistry, it is not difficult to meet the permanent first molars with severe coronal caries lesions in children or adolescents. The circumstances surrounding the first molars of children and adolescents are so immature and imperfect compared with those of adults. So we thought it significant to understand the status of these teeth at the moment of endodontic treatment and immediate cause of it. 106 patients with 135 permanent molars necessitating endodontic treatment in childhood and adolescence were included in this study, and the dental records and radiographs were examined. 1. The mean age was 11.9 year (male 11.5, female 12.5) and the result shows significant difference between gender(p<0.05). The mandibular teeth took more than half percentage than maxillary teeth. 2. Of 135 teeth, 45.2 percent of teeth had history of dental treatment previously and 16.3 percent of teeth showed necessity of re-endodontic treatment. 3. Of 73 teeth, 22 teeth had mesial-wall cavity causing endodontic treatment, 39 had occlusal cavity, and 12 had distal cavity.

X-LINKED DOMINANT HYPOPHOSPHATAEMIC RICKETS: 13 YEARS FOLLOW-UP STUDY (X 염색체 우성 저인산혈증성 구루병: 13년간의 치험례)

  • Ha, Na;Kim, Youngjin;Kim, Hyunjung;Nam, Soonhyeun
    • The Journal of Korea Assosiation for Disability and Oral Health
    • /
    • v.13 no.1
    • /
    • pp.14-18
    • /
    • 2017
  • X-linked dominant hypophosphataemic rickets(XLHR) is a hereditary disease generally transmitted as an X-linked dominant trait. Oral manifestations include poorly mineralized dentin, enlarged pulp chambers and root canals, early tooth loss. Also, spontaneous dental abscesses could occur in the absence of a history of trauma or caries. This report describes the clinical finding and dental treatment of a child, who came to the hospital for treatment caries but was refered to pediatrics because the child showed clinically short of status, bow-leg and radiographically enlarged pulp chamber and canal, there as diagnosed as XLHR. After the diagnosis, 13 years follow-up and treatment were performed.