COMPARATIVE ANALYSIS OF ABUTMENT TOOTH CONDITION WITH STUMP INLAYS OVER VARIED USAGE PERIODS

Abstract

The aim of this study is to compare the condition of abutment teeth restored with stump inlays over different periods of use by applying periotestometry and radiography findings. Materials and methods. Ninety-six patients with extensively decayed dental crowns, including low crowns, were examined and treated. The patients were divided into two groups: Group A (main group, standard method for inlays) and Group B (control group, domestic ashless plastic used for modeling). Each group was further divided into three subgroups: A1 and B1 (single-rooted teeth with different crown types), A2 and B2 (collapsible cusp inlays with subsequent artificial crowns), and A3 and B3 (cusp inlays for bridge structures). The stability of the tooth was determined using a Periotest periotestometer (Germany), with scores ranging from -08 to +50 units. Radiological diagnostics and monitoring were conducted using targeted dental radiography with the X-genus DS apparatus. The degree of alveolar bone resorption was quantified using the Fuchs index of alveolar bone destruction. Result. In group A1, prosthetics with full cast crowns prior to orthopedic treatment initially improved stability by 2.93%, but this effect diminished by 3.39% after 12 months. Both metal-ceramic and all-ceramic crowns led to a decline in stability over the study period. Group B1 exhibited a stability increase of 1.42%, which reduced to 1.14% after 12 months. Metal-ceramic and all-ceramic crowns influenced tooth stability differently throughout the study. Within group B2, prosthetics with full cast crowns initially raised stability by 1.92%, yet this effect decreased to 0.28% after 12 months. Similarly, metal-ceramic and all-ceramic crowns indicated fluctuations in stability of supporting teeth over the study duration. In group A3, prosthetics with full cast bridges prior to orthopedic treatment initially increased stability by 0.86%, declining to a decrease of 2.07% after 12 months. Metal-ceramic bridges exhibited a smaller indicator at 6 months compared to pre-treatment, with this decrease persisting after 12 months. Conversely, all-ceramic bridges demonstrated stability enhancement by 0.61% after 6 months, persisting higher by 1.92% after 12 months. For group B3, prosthetics with full cast bridges prior to orthopedic treatment increased stability by 1.55%, maintaining a higher stability by 1.91% after 12 months. Metal-ceramic bridges indicated a decrease at 6 months compared to pre-treatment, persisting after 12 months. All-ceramic bridges showed a stability decrease by 2.42% after 6 months, yet remaining higher by 1.92% after 12 months compared to pre-treatment levels. Conclusions. The choice of prosthetic method for the manufacture of pin-and-stem inlays should be justified, taking into account the clinical situation and individual needs of each patient.