• Title/Summary/Keyword: 매복 영구치

Search Result 65, Processing Time 0.051 seconds

UNERUPTED PRIMARY MOLARS (미맹출 유구치의 치험례)

  • Kang, Sun-Hee;Yang, Young-Sook;Lee, Kwang-Hee
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.32 no.2
    • /
    • pp.217-223
    • /
    • 2005
  • The term 'impaction teeth' is used to designate a tooth which remains unerupted in jaw beyond the time at which it should normally be erupted. Most cases of impacted teeth reported in the literature are permanent teeth. The impaction of primary teeth occur rarely whereas impaction of second primary molars is more numerous than all other impactions. Failure of eruption of primary teeth may cause a number of complications, such as interference with development and eruption of successive permanent teeth, malocclusion, cystic change of tooth follicle. The clinican should consider the various treatment option available (a) No treatment and observation, (b) surgical extraction (c) space regainer. Proper treatment plan should be established after thought consideration of impacted tooth and it's relation with successive permanent tooth.

  • PDF

Orthodontic Treatment of an Impacted Immature Tooth Using C-tube as a Skeletal Anchorage : Case Reports (C-tube를 골격성 고정원으로 이용한 매복된 미성숙 영구치의 교정적 치료 : 증례 보고)

  • Choi, Sooyeon;Kong, Eunkyung;Chung, Kyurhim;Baek, Kwangwoo
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.41 no.2
    • /
    • pp.157-165
    • /
    • 2014
  • Skeletal anchorage is recommended as an orthodontic treatment for an impacted immature permanent tooth. Among these methods, C-tube is relatively safe because it is fixed to the cortical bone of interdental and the lower part of the root with several short miniscrews, which causes less damage to the root in patients of early permanent dentition. As it can be easily bent, the traction direction can be adjusted to favorable bone density sites. However, patient cooperation is important and traction based on physiological force in order to gain root and dentoalveolar tissue development in immature permanent teeth is required. Periodic follow-ups should be mandatory.

IMPACTION OF PRIMARY TEETH ASSOCIATED WITH ODONTOMA: CASE REPORTS (치아종에 의한 유치의 매복: 증례 보고)

  • Kim, Jung-Woo;Shin, Teo-Jeon;Hyun, Hong-Keun;Kim, Young-Jae;Kim, Jung-Wook;Jang, Ki-Taeg;Kim, Chong-Chul;Lee, Sang-Hoon
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.39 no.1
    • /
    • pp.36-42
    • /
    • 2012
  • Odontomas generally appear as small, solitary, or multiple radio-opaque lesions found on routine radiographic examinations. It is a comparatively common odontogenic tumor, and may lead to interfere with the eruption of its associated tooth. In general, odontomas occur more often in permanent dentition and are very rarely associated with primary teeth. This report deals with five rare cases of primary teeth impaction associated with odontomas, with spontaneous eruption occurring in all five cases after simple surgical removal of the odontoma. Impacted primary teeth may be associated with defects in development and eruption of their permanent successors, and thus long-term observation is necessary until the permanent successors erupt.

Orthodontic Treatment of Molar Teeth Impacted by Local Factors (국소적 원인으로 매복된 구치의 교정치료)

  • Kim, Seong-Sik;Son, Woo-Sung
    • The korean journal of orthodontics
    • /
    • v.29 no.1 s.72
    • /
    • pp.129-136
    • /
    • 1999
  • Etiologies of the molar teeth impaction are cyst, supernumerary teeth, ankylosis by replacement resorption, abnormal eruptive path, improper orthodontic treatment, etc. If the impacted teeth were untreated, the sequallae was as follows : loss of occlusal function, loss of permanent tooth, extrusion of opposite tooth, root resolution of adjacent teeth. The most important factor of solution of impacted teeth is treatment timing & proper application of orthodontic forces.

  • PDF

DEVELOPMENTAL AND ERUPTIONAL DISTURBANCES OF PERMANENT SUCCESSORS ASSOCIATED WITH TRAUMATIC INJURY TO PRIMARY TEETH (유치열기의 외상으로 인한 계승 영구치의 발육 및 맹출장애)

  • Lim, Hyoung-Soo;Lee, Chang-Seop;Lee, Sang-Ho
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.28 no.2
    • /
    • pp.255-260
    • /
    • 2001
  • Trauma to the primary incisors may cause developmental or eruptional disturbance of the permanent successors. Two cases illustrate developmental disturbances of arrested root formation, dilaceration, and eruptional disturbances of impaction, ectopic eruption of permanent successors caused by traumatic injury to deciduous incisors. The patient of the first case suffered trauma at the age of 4 years 7 months, causing alveolar bone fracture including the maxillary right primary central and lateral incisors that were immedi-ately extracted. The second patient had trauma episodes at the age of 3 years. Avulsion of the maxillary primary right central and lateral incisors were occurred due to trauma. After such trauma, regular follow-up including radiographs is necessary to detect early any possible interference with normal eruption of permanent successors.

  • PDF

UNERUPTED PRIMARY MOLAR (미맹출 유구치에 관한 증례)

  • Han, Yeon-Sun;Choi, Byung-Jai;Kim, Seong-Oh;Lee, Chong-Gap
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.29 no.3
    • /
    • pp.444-449
    • /
    • 2002
  • The term 'impaction' is used to designate a tooth which remains unerupted in the jaw beyond the time at which it should normally be erupted. The main causal factors are local (lack of space, ectopic positions of teeth, supernumerary teeth, cyst, the occurrence of infectious process in the eruption path, traumatic facial injury etc.). Systemic and genetic disorders, however, may have primary failure of eruption and retarded eruption as additional symptoms (cleidocranial dysplasia, osteopetrosis etc.). Most cases of impacted teeth reported in the literature are of permanent teeth. The absence of primary teeth occur rarely whereas impaction of second primary molars is more numerous than all other impactions. Impaction due to primary failure of eruption must be distinguished from the secondary infraocclusion. The etiology of impaction of primary teeth is probably related to early ankylosis of primary teeth, but it is not clear. Failure of eruption of primary teeth may cause a number of complications, such as interference with development and eruption of succedaneous teeth, formation of cyst, and damage to adjacent teeth. This study is to report cases of primary failure of eruption in the primary dentition.

  • PDF

Epidemiologic Survey on Failed Eruption of Mandibular First Molar (매복된 하악 제1대구치의 매복 양상과 역학적 조사)

  • Kim, Sohyun;Kim, Youngjin;Kim, Hyunjung;Nam, Soonhyeun
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.43 no.1
    • /
    • pp.51-59
    • /
    • 2016
  • The purpose of the present retrospective study was to analyze gender, age, awareness, etiology, and treatment choice in patients with failed eruption of the mandibular first molar. Radiographic material and dental records from 67 patients with 74 mandibular first molars with failed eruption treated during the years 2001-2014 were evaluated. As results, the prevalence of mandibular first molar with failed eruption was higher in males than females, and the average awareness age was 9.19 years old. The most common etiological cause was unknown, and the next most common causes were abnormal eruption pathway and odontogenic tumor in order. In this study, it is suggested that more dental education to children about the time of eruption of permanent tooth is required, and the importance of regular dental check-ups is emphasized during mixed dentition.

Factors that influence treatment duration for patients with palatally impacted maxillary canines (구개측으로 매복된 상악견치의 교정치료기간에 영향을 미치는 요소)

  • Jeong, Song-Hwa;Jo, Bong-Hye;Kim, Seong-Sik
    • The korean journal of orthodontics
    • /
    • v.37 no.2 s.121
    • /
    • pp.150-158
    • /
    • 2007
  • Objective: The aim of this study was to determine the relationship between the status of a unilateral palatally impacted maxillary canine (as seen on the panoramic radiograph) and the orthodontic treatment duration. Methods: A total of 36 subjects were chosen (8 males and 28 females, $13.7{\pm}2.5$ years). All patients had undergone orthodontic traction of the impacted canine after a closed flap surgery. The position of impacted canine on the panoramic radiograph was traced and calculated with regard to the treatment duration. Results: The canine overlap over the lateral incisor (COGr) had significant statistical difference between the short-term and the long-term treatment duration groups (divided by average treatment time of 21 months) (p<0.05). Multiple regression indicated that the variables of significance (with treatment duration as the dependent variable) were the canine vertical height from the occlusal plane $(HCV,\;r^2=0.115;\;p<0.05)$ and the mandibular anterior width $(MnDW,\;r^2=0.142;\;p<0.05)$. The treatment duration, the canine angle to the incisor midline (CA), and HCV decreased from primary dentition (under 12 yrs) to permanent dentition (15 yrs). Howerer, these increased again at the adolescent ages (over 16 yrs). Conclusion: These findings suggested that orthodontic treatment of a palatally impacted canine would show good prognosis at an age of early permanent dentition with the canine showing smaller CA and HCV.

ORTHODONTIC TRACTION OF THE LOWER DECIDUOUS SECOND MOLAR IMPACTED BY AN ODONTOMA (치아종에 의해 매복된 하악 제2 유구치의 교정적 견인)

  • Han, Yoon-Beum;Kim, Seong-Oh;Lee, Jae-Ho;Choi, Hyung-Jun;Sohn, Hyung-Kyu;Choi, Byung-Jai
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.36 no.1
    • /
    • pp.84-88
    • /
    • 2009
  • Tooth impaction refers to situations where a tooth fails to erupt due to mechanical blocking and remains unerupted beyond the normal time of eruption. It is commonly found in permanent dentition, but rarely in deciduous dentition. Tooth impaction is caused by systemic or local factors, and most common etiology is odontoma. Odontoma is also commonly found in permanent dentition, and rarely in deciduous dentition. We are presenting case of 4 year and 4 month year old girl, who had impacted and disto-angulated lower left deciduous second molar due to odontoma. We removed odontoma and performed orthodontic traction of impacted lower left deciduous second molar. Then, the impacted primary molar was erupted and acceptable occlusion was obtained.

  • PDF