Comparative Evaluation of Root Surface Morphology After Planing and Root Conditioning with Tetracycline Hydrochloride - An In Vitro SEM Study - Exam 54 - Spring Summer 2014
Tetracycline hydrochloride has been shown to produce changes on periodontally involved root surfaces that can potentially enhance periodontal regeneration. This in vitro study was carried out to compare the root surface changes after scaling and root planing alone, and scaling and root planing followed by application of 100 mg/ml tetracycline hydrochloride under the Scanning Electron Microscope.

 1) Advantage of tetracycline hydrochloride over citric acid as a root conditioning agent:
  1. High substantivity
  2. Calcium chelation
  3. High pH
  4. Lower application time
 2) Root conditioning of diseased root surfaces shows:
  1. Higher fibroblast attachment
  2. Connective tissue attachment gain
  3. Exposure of dentinal tubules
  4. All of the above
 3) Scaling and root planning of periodontally diseased root surface results in:
  1. Development of smear layer
  2. Opening of dentinal tubules
  3. Loss of collagen fiber insertion
  4. Alteration in mineral density of root surface
 4) Root conditioning by tetracycline hydrochloride removes:
  1. Smear layer
  2. Formalin layer
  3. Cemental pins
  4. Dentinal layer
 5) Which of these is not used for root conditioning:
  1. EDTA
  2. Citric acid
  3. Tetracycline HCl
  4. Amelogenin