Intervention Review

Extraction of primary (baby) teeth for unerupted palatally displaced permanent canine teeth in children

  1. Nicola Parkin1,*,
  2. Philip E Benson1,
  3. Anwar Shah2,
  4. Bikram Thind3,
  5. Zoe Marshman1,
  6. Gillian Glenroy4,
  7. Fiona Dyer5

Editorial Group: Cochrane Oral Health Group

Published Online: 15 APR 2009

Assessed as up-to-date: 17 DEC 2008

DOI: 10.1002/14651858.CD004621.pub2

Database Title

Additional Information

How to Cite

Parkin N, Benson PE, Shah A, Thind B, Marshman Z, Glenroy G, Dyer F. Extraction of primary (baby) teeth for unerupted palatally displaced permanent canine teeth in children. Cochrane Database of Systematic Reviews 2009, Issue 2. Art. No.: CD004621. DOI: 10.1002/14651858.CD004621.pub2.

Author Information

  1. 1

    School of Clinical Dentistry, Department of Oral Health and Development, Sheffield, UK

  2. 2

    Falchion Orthodontics, Darlington, Durham, UK

  3. 3

    Argyll House, Department of Orthodontics, Aberdeen, UK

  4. 4

    Foxbar Clinic, Paisley, UK

  5. 5

    Charles Clifford Dental Hospital, Department of Orthodontics, Sheffield, UK

*Nicola Parkin, Department of Oral Health and Development, School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield, S10 2TA, UK. nicolaparkin@hotmail.com.

Publication History

  1. Publication Status: New
  2. Published Online: 15 APR 2009

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Abstract

  1. Top of page
  2. Abstract
  3. Plain language summary
  4. 摘要

Background

The permanent canine tooth in the upper (maxillary) jaw sometimes does not erupt into the mouth correctly. In about 1% to 3% of the population these teeth will be diverted into the roof of the mouth (palatally). It has been suggested that if the deciduous canine is removed at the right time this palatal eruption might be avoided.

Objectives

To evaluate the effect of extracting the primary maxillary canine on the eruption of the palatally ectopic maxillary permanent canine.

Search methods

We searched the Cochrane Oral Health Group's Trials Register (to April 2008); CENTRAL (The Cochrane Library 2008, Issue 3); MEDLINE (1966 to April 2008); EMBASE (1980 to April 2008). There were no language restrictions. Authors of trials were contacted for further data.

Selection criteria

Trials were selected if they met the following criteria: a randomised or quasi-randomised controlled trial, involving the extraction of the primary maxillary canine and assessing eruption/non-eruption of the palatally displaced maxillary permanent canine.

Data collection and analysis

Seven review authors independently, in duplicate, examined the studies found in the search. The primary outcome was the reported prevalence of eruption or non-eruption of the ectopic permanent canine into the mouth following observation or intervention. Results were to be expressed as risk ratios for dichotomous outcomes with 95% confidence intervals and mean differences for continuous outcomes. Heterogeneity was to be investigated, including both clinical and methodological factors.

Main results

The search identified 324 publications of which 295 were excluded after reviewing the abstract. Full articles were obtained for the remaining 31, of which 19 were non-English and required translation. Three reports of two randomised controlled trials were identified for possible inclusion in the review; however, the data in the publications were not presented in a form that could be usable and the authors have been contacted for further details.

Authors' conclusions

There is currently no evidence to support the extraction of the deciduous maxillary canine to facilitate the eruption of the palatally ectopic maxillary permanent canine. Two randomised controlled trials were identified but unfortunately, due to deficiencies in reporting, they cannot be included in the review at the present time.

 

Plain language summary

  1. Top of page
  2. Abstract
  3. Plain language summary
  4. 摘要

Extraction of primary (baby) teeth for unerupted palatally displaced permanent canine teeth in children

Permanent canines may become displaced in the roof of the mouth and remain buried beneath the gum of the palate. This is a fairly common anomaly and is present in approximately 1% to 3% of the population. One suggestion to normalise the palatally displaced canine is to extract the overlying primary canine between the age of 10 and 13 years. However, after systematically searching the literature, no trials meeting all the inclusion criteria were identified. The recommendation of extracting the primary canine is in fact based on a prospective cohort study with no control group.

 

摘要

  1. Top of page
  2. Abstract
  3. Plain language summary
  4. 摘要

背景

利用拔除乳牙治療有偏向顎側未萌發恆牙犬齒的兒童

上顎恆牙犬齒在萌發時有時候會有萌發位置錯誤的情況,有1% −3%的人會有上顎恆牙犬齒萌發位置偏向顎側.如果我們可以在正確的時間先將乳牙犬齒拔除或許就可以避免恆牙犬齒萌發位置錯誤.

目標

評估拔除乳牙犬齒對於有顎側異位萌發的恆牙犬齒的影響.

搜尋策略

我們搜尋的資料庫有Cochrane Oral Health Group's Trials Register (到2008年4月); CENTRAL (The Cochrane Library 2008, Issue 3);MEDLINE (1966年到2008年4月);EMBASE (1980年 到2008年4月).搜尋的資料沒有語言的限制.和試驗的作者聯繫取得更進一步的資料.

選擇標準

所選擇的試驗須符合以下的條件: 1.隨機或是半隨機控制試驗 2.拔除上顎乳牙犬齒並且評估萌發中或是未萌發上顎顎側偏移恆牙犬齒.

資料收集與分析

7位回顧作者會各自檢查詢資料.最初結果顯示萌發中或是未萌發的異位恆牙犬齒到完全萌發的觀察和時間.所得結果CI(confidence intervals)為95%,並且有對於臨床上和方法的影響因素有分析.

主要結論

搜尋到324篇文章其中的295篇文章經由檢視摘要後被剃除,剩下的29篇中有19篇的是由非英文所寫成需要經過翻譯.而有三篇包含兩個隨機控制試驗的文章因為所得的結果並沒有在文章中完整的提出所以不能使用,必須和作者聯絡取得進一步的細節.

作者結論

最近的研究顯示並沒有證據可以支持拔除上顎乳牙犬齒可以矯治上顎顎側異位萌發恆牙犬齒.本搜尋發現兩個隨機控制試驗研究,但不幸的是,由於實驗紀錄的不完整,因此無法列入本次的文獻回顧.

翻譯人

本摘要由臺灣大學附設醫院杜元佑翻譯。

此翻譯計畫由臺灣國家衛生研究院(National Health Research Institutes, Taiwan)統籌。

總結

恆牙犬齒在萌發中可能會往顎側萌發,甚至異位萌發在口頂並且被牙齦所包住.而這發生率大約是1% −3%.治療的方式中有一個是建議在小朋友10或是13歲時先將乳牙犬齒拔除.但是經過系統性搜尋後,沒有試驗是合乎所有收集的標準.所以現在拔除乳牙治療異位萌發恆牙的方式仍然是建立在沒有控制的預期世代研究(prospective cohort study).

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