Immediate and Delayed Dentin Sealing Effect on Partial Crowns
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT03443583|
Recruitment Status : Completed
First Posted : February 23, 2018
Last Update Posted : February 27, 2018
|Condition or disease||Intervention/treatment||Phase|
|Adhesion Tooth Crown Luting Immediate Dentin Sealing||Other: Immediate Dentin Sealing or Delayed Dentin Sealing||Not Applicable|
Micromechanical and chemical retention of ceramic fixed prosthesis to tooth structure introduced minimal invasive preparation to dentistry. As a result, biomechanically or aesthetically compromised teeth can be restored at a lower biological price, saving sound tooth tissues. A slow but steady (mind) shift from full metal and metal-ceramic restorations that require conventional cementation and substantial tooth loss (Edelhoff en Sorensen, 2002) to less destructive partial all ceramic restorations that require adhesive cementation is seen in the clinical field.
The clinical success of ceramic restorations relies heavily on the quality of their adhesion to dentin, which remains a clinical challenge to date. Improvements in this field over the years have brought about better cements and more effective methods to condition both substrates and teeth.
Immediate Dentin Sealing (IDS) is a technique that presumably improves adhesion of ceramic fixed prosthesis to tooth structure which results in a better marginal adaptation to dentin and less postoperative sensitivity compared to conventional adhesive cementation, also referred to as Delayed Dentin Sealing (DDS).(Pashley et al, 1992; Paul en Scharer, 1997; Magne et al, 2005; Magne et al, 2007; Breschi et al, 2008; Lee en Park, 2009). The main difference between the IDS and DDS technique lies in the fact that in IDS, a thin layer of bonding resin is applied immediately after tooth preparation and prior to impression taking, whereas in DDS this layer is applied immediately before cementation of the restoration. At first glance this may appear a minor difference, but it is presumed to be of major clinical importance. The effectiveness of IDS is studied as an adjunct to conventional adhesive cementation of ceramic indirect restorations. A split mouth clinical trial comparing ceramic restorations cemented with either IDS or DDS after one year of clinical service is executed. For each patient two all ceramic indirect restorations are made. One is cemented by means of DDS (control group) and the other one is cemented by means of IDS (experimental group). Clinical evaluation is performed shortly after cementation and after 1 and 3 year(s) of clinical function.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||30 participants|
|Intervention Model:||Single Group Assignment|
|Intervention Model Description:||A split mouth clinical trial comparing ceramic restorations cemented with either IDS or DDS after one year of three years of clinical service.|
|Masking Description:||Only the participant does not know which treatment is used on which teeth. The care provider and investigator have to know because different treatment protocol steps that have to be taken.|
|Official Title:||Prospective Randomized Clinical Trial on the Survival and Quality of Survival of Lithium Disilicate Posterior Partial Crowns Bonded Using Immediate or Delayed Dentin Sealing a 3- Year Follow up|
|Actual Study Start Date :||November 1, 2013|
|Actual Primary Completion Date :||February 1, 2018|
|Actual Study Completion Date :||February 1, 2018|
- Other: Immediate Dentin Sealing or Delayed Dentin Sealing
The main difference between the IDS and DDS technique lies in the fact that in IDS, a thin layer of bonding resin is applied immediately after tooth preparation and prior to impression taking, whereas in DDS this layer is applied immediately before cementation of the restoration.
- Survival [ Time Frame: 3 year ]Survival of the restorations
- Quality of the restorations [ Time Frame: 3 year ]Criteria according to Hickel and USPHS