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Related Experiment Videos

Long-term experience with telescopically retained overdentures (double crown technique).

I Coca1, U Lotzmann, R Pöggeler

  • 1Dental School, Philipps-University, Department of Prosthodontics, Georg-Voigt-Str. 3, 35033 Marburg, Germany.

The European Journal of Prosthodontics and Restorative Dentistry
|April 20, 2001
PubMed
Summary

Telescopically retained overdentures show good long-term results, with higher tooth survival rates in the mandible. Palladium-silver alloys are recommended over gold-copper alloys for telescopic crowns due to reduced tarnishing.

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Area of Science:

  • Dental prosthetics
  • Geriatric dentistry

Background:

  • Telescopically retained overdentures offer a stable solution for tooth loss.
  • Long-term outcomes and material suitability require further investigation.

Purpose of the Study:

  • To assess the long-term efficacy and tooth survival rates of telescopically retained overdentures.
  • To compare the performance of different alloys used for telescopic crowns.

Main Methods:

  • A longitudinal study examined 92 patients with 106 overdentures over 2 to 11 years.
  • Tooth survival rates were analyzed, differentiating between maxillary and mandibular placements.
  • Material suitability was evaluated based on observations of crown tarnishing.

Main Results:

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  • Overdentures were placed on 236 teeth, with 33 teeth lost during follow-up.
  • Five-year tooth survival rates were 92% for mandibular and 86% for maxillary overdentures.
  • Palladium-silver alloys demonstrated better resistance to tarnishing compared to gold-copper alloys.

    • Conclusions:

    • Telescopically retained overdentures provide durable, long-term tooth retention, particularly in the mandible.
    • Palladium-silver alloys are preferable for fabricating telescopic crowns due to superior material stability.