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Related Experiment Videos

Study on gutta-percha points using scanning electron microscopy and analysis with electron microprobe.

J Fernández Monjes1, H Lopreite, B M Maresca

  • 1Dept. of Endodontics, Faculty of Dentistry, University of Buenos Aires, Argentina.

Acta Odontologica Latinoamericana : AOL
|January 1, 1994
PubMed
Summary
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This study examined gutta-percha points, finding most had irregular surfaces and truncate apices. Chemical analysis revealed elements like barium and aluminum, which may impact endodontic repair.

Area of Science:

  • Dental materials science
  • Endodontics
  • Scanning electron microscopy

Background:

  • Gutta-percha is a primary root canal filling material.
  • Variations in gutta-percha point morphology and composition may affect treatment outcomes.
  • Understanding these variations is crucial for predictable endodontic therapy.

Purpose of the Study:

  • To comparatively analyze the apical morphology, contour, and surface characteristics of different gutta-percha brands.
  • To determine the chemical composition of these gutta-percha brands.
  • To assess potential implications of observed characteristics on postendodontic repair.

Main Methods:

  • Scanning electron microscopy (SEM) was used to evaluate apical morphology and contour at magnifications of 45x, 70x, and 300x.

Related Experiment Videos

  • Energy-dispersive X-ray analysis (EDAX 9100 electron microprobe) was employed to survey the chemical composition.
  • Gutta-percha points were classified based on apical morphology (conical/truncate), contour (regular/irregular), and surface integrity (defects/no defects).

    • Main Results:

    • Apical morphology was classified as conical (25%) and truncate (75%).
    • Contour was categorized as regular (50%) and irregular (50%), with surface defects observed in 50% of samples.
    • Inorganic compounds including Zinc (Zn), Barium (Ba), Silicon (Si), Magnesium (Mg), Calcium (Ca), Phosphorus (P), Chlorine (Cl), and Aluminum (Al) were detected in varying proportions.

    Conclusions:

    • A significant percentage of gutta-percha points exhibit truncate apices and irregular surfaces, potentially influencing their adaptation within root canals.
    • The presence of elements such as Barium (Ba) and Aluminum (Al) in gutta-percha formulations warrants further investigation.
    • These elements may potentially interfere with periapical tissue healing or cause irritation if overfilled during endodontic procedures.