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RCT: Effectiveness of a Microscope During Dental Root Apical Surgery

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ClinicalTrials.gov Identifier: NCT01759069
Recruitment Status : Unknown
Verified January 2014 by M.H.T. de Ruiter, Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA).
Recruitment status was:  Recruiting
First Posted : January 2, 2013
Last Update Posted : January 20, 2014
Information provided by (Responsible Party):
M.H.T. de Ruiter, Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)

Brief Summary:

An endodontic treatment is the standard therapy for teeth with periapical periodontitis. The overall success rate for this treatment is high; 97% of the treated teeth are retained in the oral cavity after 8 years (Salehrabi & Rotstein, 2004). However, there are teeth that have a persistent granuloma because of various reasons and need endodontic retreatment or apical surgery. Overall results in literature for an endodontic retreatment show a success rate of 77%-89% (Ng, Mann, & Gulabivala, 2008; Salehrabi & Rotstein, 2010), the results of apical surgery are more or less similar (von Arx, 2005). Which of the two methods is preferred for failed root canal treatments is dependant on a variety of reasons. (For example an amount of gutta-percha outside the apex of the root is better corrected by apical surgery. Persistent infection as a result of insufficient gutta-percha amounts in a treated root is best treated with an endodontic retreatment.) The overall results in apical surgery have increased the past years due to better preparation of the apical end of the root by the use of an ultrasonic device (de Lange, Putters, Baas, & van Ingen, 2007) and new materials that are used for filling of the rootend e.g. MTA (von Arx, Hanni, & Jensen, 2010)

Objective of the study:

The objective of this study is to assess whether or not apical surgery that is carried out with the help of a microscope has a higher success rate than apical surgery without the use of a microscope. No RCT is found in present literature (Del Fabbro, Taschieri, Lodi, Banfi, & Weinstein, 2009).

Condition or disease Intervention/treatment
Effectiveness of Microscope During Apical Surgery in Endodontic Treated Teeth. Procedure: Surgical treatment with microscope

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 190 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: The Effectiveness of a Microscope During Apical Surgery; a Prospective Randomized Controlled Clinical Trial.
Study Start Date : September 2012
Estimated Primary Completion Date : December 2015
Estimated Study Completion Date : December 2015

Arm Intervention/treatment
Experimental: treatment with microscope
treatment with microscope
Procedure: Surgical treatment with microscope
Experimental: treatment without microscope
treatment without microscope
Procedure: Surgical treatment with microscope

Primary Outcome Measures :
  1. Success is measured by Clinical outcome and radiographic assessment. [ Time Frame: 6 months and 1 year ]
    A radiograph of the treated tooth is made directly post-operative, after 6 months and after 1 year post treatment. Clinical examination is performed at 6 months and 1 year after the operation.

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Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Peri-apical lesion on one of the teeth, confirmed on radiograph.
  • Previous endodontic treatment was more than 6 months earlier.

Exclusion Criteria:

  • Root fracture.
  • Periodontal origin of apical infection or absence of marginal buccal bone after flap elevation.
  • Root perforation.
  • No previous endodontic treatment.
  • Previous endodontic surgery.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01759069

Contact: M.H.T. de Ruiter, Drs. m.h.deruiter@amc.nl

Academic Medical Center; Clinic of Oral and Maxillofacial Surgery Recruiting
Amsterdam, Netherlands, 1105 AZ
Principal Investigator: M.H.T. de Ruiter, Drs.         
Sponsors and Collaborators
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)

Responsible Party: M.H.T. de Ruiter, Resident/PhD student at dept. of Oral and Maxillofacial Surgery, Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
ClinicalTrials.gov Identifier: NCT01759069     History of Changes
Other Study ID Numbers: Microscope
First Posted: January 2, 2013    Key Record Dates
Last Update Posted: January 20, 2014
Last Verified: January 2014