Direct versus indirect veneer restorations for intrinsic dental stains

  • Review
  • Intervention

Authors


Abstract

Background

Patients with discoloured teeth frequently present to the dentist requesting restorations designed to improve their appearance. For teeth that are sound, this might include the use of a veneer restoration. The veneer acts as a thin layer of a material covering the labial surface of a tooth and can be applied directly to the tooth, or by using indirect methods.

Objectives

To examine the effectiveness of direct versus indirect laminate veneer restorations.

Search methods

The following electronic databases were searched: the Cochrane Oral Health Group's Trials Register (November 2003), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2003, Issue 4), MEDLINE (1980 to November 2003) and EMBASE (1980 to November 2003). There was no restriction on language.

Selection criteria

All randomised controlled trials (RCTs) of participants with permanent anterior teeth suitable for restorations using laminate veneers, comparing direct (different composite materials) and indirect techniques for making dental veneers. The indirect restorations may be either composite or porcelain. The primary outcome was restoration failure.

Data collection and analysis

Assessment of relevance and validity and data extraction were conducted in triplicate. Authors of the primary studies were contacted to provide additional information as necessary.

Main results

Six full publications were screened as being potentially relevant to the review, only one trial was found to meet the review's inclusion criteria. Although the trial met the review's inclusion criteria with regard to participant characteristics, interventions and outcomes assessed, problems with the reporting of the data prevented any statistical analysis of the results.

Authors' conclusions

There is no reliable evidence to show a benefit of one type of veneer restoration (direct or indirect) over the other with regard to the longevity of the restoration.

摘要

背景

直接與間接貼面(veneer)修補體對內因性牙齒染色(intrinsic dental stains)效果比較

受到牙齒變色困擾的患者,經常會出現在牙科診所尋求修補方式,以改善他們的外觀。若牙齒本身是完整的,貼面會是可以使用的修復方式。貼面是一層薄薄的材料,可以直接使用在,或是用間接黏著的方式,覆蓋牙齒的唇側面(labial surface)。

目標

測試直接與間接陶瓷貼面修復體的效果。

搜尋策略

我們透過以下的電子資料庫做搜尋:The Cochrane Oral Health Group's Trials Register、The Cochrane Central Register of Controlled Trials (CENTRAL)、MEDLINE (1980 to 19/11/2002)和EMBASE (1980 to 19/11/2002)。語言的部分並沒有限制。

選擇標準

所有適何接受陶瓷貼面治療的成人前牙,比較直接法(使用不同的複合材料)與間接法來製作貼面的隨機對照試驗。間接修復體可以是複合材料或是陶瓷,主要的比較結果是修復失敗。

資料收集與分析

蒐集出來的數據會評估其相關性(relevance)及正確性(validity),我們也會連絡文獻的作者,在必要時提供更進一步的資料。

主要結論

總共有6篇文獻,在初步的相關性評估中被篩選出來,但最後只有一篇完全符合搜尋標準。雖然這篇文獻在獨特性、干預性及結果都符合標準,但是此試驗的數據並無法進行近一步的統計分析。

作者結論

並沒有可性的證據顯示有某一種貼面(無論是直接或間接),在持久性上較另一種來的強。

翻譯人

本摘要由臺灣大學附設醫院劉耀方翻譯。

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

總結

沒有強烈的證據可以說明不同的貼面復形體在染色或變色的牙齒上的效果。目前只能說在染色或變色的牙齒上,若要改變其外觀,貼面治療可以是一種選項。如果牙齒是健康完整的,一層薄薄的貼面可以用來覆蓋牙齒表面,遮蔽掉下方變色的部分。貼面可以是陶瓷的(兩次約診,需要磨除少許牙齒表面)或是複合樹脂(一至兩次約診)。這次的文獻回顧並沒有找出足夠證據來說明貼面復形體對變色牙的效果。

Plain language summary

Direct versus indirect veneer restorations for intrinsic dental stains

No strong evidence about the effects of different veneer restorations for stained and discoloured teeth.
An option for improving the appearance of stained or discoloured teeth is veneer restoration. If the teeth are sound, a thin layer of veneer can be used to coat the tooth, masking the underlying discolouration. Veneers may be either porcelain (two-visit procedure, requiring removal of a minimal amount of tooth surface) or composite materials (one or two-visit procedures).The review found there is not enough evidence from trials studying the effects of veneer restoration for discoloured teeth.