Evaluation of peri-implant soft and hard tissues behavior in screw-retained crowns by the biologically oriented preparation technique (BOPT): ambispective longitudinal analytical study

• Victoria Mandillo-Alonso ^[1] ; Rocío Cascos-Sánchez ^[2] ; José-Luis Antonaya-Martín ^[3] ; Martín Laguna-Martos ^[4]
  1. [1] DDS, MDent. Collaborating Professor of Master Prótesis sobre Implantes. Rey Juan Carlos University. Madrid
  2. [2] DDS, MSD, MDS. MDent. Collaborating Professor of Postgrade Implantoprótesis Avanzada. Complutense University. Madrid. DDS, MSD, MDS. MDent. Collaborating Professor of Master Prótesis sobre Implantes. Rey Juan Carlos University. Madrid
  3. [3] DDS, MSD, PhD, MDent. Director of Master Prótesis sobre Implantes. Rey Juan Carlos University. Madrid. DDS, MSD, PhD, MDent. Collaborating Professor of Postgrade Implantoprótesis. Complutense University. Madrid
  4. [4] DDS. Collaborating Professor of Master Prótesis sobre Implantes. Rey Juan Carlos University. Madrid

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• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 14, Nº. 1 (January), 2022, págs. 64-71
• Idioma: inglés
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• Resumen

  • Background: Clinical and radiographic evaluation of soft and hard tissues around convergent collar implants and shoulderless abutments.

    Material and Methods: Ambispective longitudinal analytical study with a sample size of 32 implants in 21 patients treated in a private dental clinic. Patients were divided into two groups: Prama Implants or group 1 (n=21) and Shelta implants combined with XA abutment or group 2 (n=11). Probing depth, horizontal mucosa thickness, pe- ri-implant bone loss, plaque and bleeding after one-and two-year follow up are analyzed.

    Results: In group 1, mean probing depth value was 1.67 mm (±0.58) and mean horizontal mucosa thickness value was 2.71 (±0.96). In group 2 mean probing depth was 2.18 (±0.40) and mean horizontal mucosa thickness value was 3.27 mm (±1.19). In group 1 an 85.7% of peri-implant bone level was maintained and a 14.3% increased. In group 2 a 100% of peri-implant bone level was maintained. In group 1 a 19% presented plaque when crowns were removed and in group 2 a 18.2% presented plaque. Neither of two groups presented spontaneous bleeding when crowns were removed. A 52.4% presented probing bleeding in group 1 and a 45.4% in group 2.

    Conclusions: Biologically guided crowns design seems to provide peri-implant hard and soft tissue stability.