Periodontal Evaluation of Patients with Ceramic Fused-to-Metal and Acrylate Fused-to-Metal Crowns over a Period of 1 to 5 Years

Svrha: U ovom radu željeli smo ispitati postoji li razlika između eksperimentalnih (nosača krunica) i kontrolnih (homolognih) zuba u skupini pacijenata s metal–akrilatnim krunicama i onoj s metal–keramičkima, te ima li razlika između tih dviju vrsta krunica kad je riječ o indeksu plaka, gingivalnom i retencijskom indeksu, CPITN-u, retrakciji marginalne gingive i resorpciji kosti. Željeli smo doznati i utječe li duljina nošenja metal–akrilatnih i metal–keramičkih krunica na navedene indekse. Ispitanici i postupci: U istraživanje je bilo uključeno 80 pacijenata obaju spolova u dobi od 20 do 65 godina s fiksnim protetskim radovima (solo krunicama). Svi potrebni parametri dobiveni su kliničkim pregledom i analizom retroalveolarnih snimki. Rezultati: Dokazana je statistički znatna razlika između eksperimentalnih i kontrolnih zuba u skupini pacijenata s metal-akrilatnim krunicama za gingivalni indeks, CPITN, retencijski indeks i retrakciju marginalne gingive, a za ostale praćene indekse nije pronađena. Osim toga rezultati su pokazali da je statistički velika razlika i između eksperimentalnih te kontrolnih zuba u skupini pacijenata s metal-keramičkim krunicama za indeks plaka, gingivalni i retencijki indeks, CPITN i retrakciju marginalne gingive, a nema razlike kod resorpcije kosti. Ustanovljeno je da između metal-akrilatnih i metal-keramičkih krunica postoji statistički znatna razlika samo kao je riječ o indeksu plaka. Zaključak: Duljina nošenja fiksnoga protetskog rada (do pet godina) u skupini pacijenata s metal-akrilatnim krunicama utječe na indeks plaka, dubinu periodontalnog sulkusa i retrakciju marginalne gingive, a kod onih s metal-keramičkim krunicama ne djeluje na praćene indekse.Purpose:The purpose of this study was to examine if there is any difference between observed teeth (abutment teeth) and control teeth (homologous) in patients with acrylate fused-to-metal (AFM) crowns and those with ceramic fused-to-metal (CFM) crowns, and if there is any difference between AFM and CFM crowns in terms of plaque index, gingival index, retention index, CPITN, marginal gingiva retraction and bone resorption. The next objective was to examine if the length of use of AFM and CFM crowns bears any impact on these indices. Material and methods: The study included 80 patients of both sexes aged 20 to 65 with fixed prosthetics (single crowns). All the research parameters were obtained from clinical examinations and radiographic analyses. Results showed that in the group of patients with AFM crowns there was a statistically significant difference between observed and control teeth in terms of gingival index, CPITN, retention index and marginal gingiva retraction, whereas there was no statistically significant difference for other indices observed. Results also showed that in patients with CFM crowns there was a statistically significant difference between observed and control teeth in terms of plaque index, gingival index, CPITN, retention index and marginal gingiva retraction, whereas there was no statistically significant difference for bone resorption. A statistically significant difference was found between AFM and CFM only in terms of plaque index. Conclusion: The length of use of the prosthetic appliance (under five years) in the group with AFM crowns did influence the plaque index, the depth of periodontal sulcus and the marginal gingiva retraction. The length of use of fixed prosthetic appliances (under five years) in the group with CFM crowns did not influence the indices observed

Radiographic Evaluation of Crestal Bone Loss Around Dental Implants in Maxilla and Mandible: One Year Prospective Clinical Study

Svrha: Godinu dana nakon ugradnje želio se analizirati gubitak alveolarne kosti u maksili i mandibuli oko implantata BREDENT Sky Blue različitih dimenzija. Materijali i metode: U maksilu je bilo umetnuto 36 implantata promjera 3,5 x 10 mm, a u mandibulu 12. Uz to, 52 implantata promjera 4,0 x 8 mm ugrađena su u maksilu i 61 u mandibulu (dvostupanjska implantacijska operacija). Rezultati: Nije bilo statističke razlike u gubitku kosti između maksile desno i lijevo te mandibule desno i lijevo na mjestima implantacije mezijalno i distalno. Rezultati su dobiveni analizom varijance (ANOVA). Zaključak: Statistički značajna razlika u gubitku kosti zabilježena je između maksile sprijeda i straga te mandibule sprijeda i straga na mjestima implantacije distalno i mezijalno. Rezultati su dobiveni analizom varijance (ANOVA).Purpose: The aim of the study was to analyze the amount of maxillary and mandibular crestal bone loss around Bredent Sky Blue type of implants of different dimensions one year after implantation. Materials and Methods: 36 implants of diameter 3.5 x 10 mm were inserted in the maxilla and 12 in the mandible. 52 implants of diameter 4.0 x 8 mm were inserted in the maxilla, and 61 in the mandible (two-stage implant surgery). Results: No statistically significant differences were found between the right and left side of the maxilla and between the right and left side of the mandible at the implant sites regarding distal and mesial bone losses as shown by analysis of variance (ANOVA). Conclusion: Statistically significant differences were found between anterior maxilla, posterior maxilla and anterior mandible and posterior mandible at implant sites regarding distal and mesial bone losses as shown by analysis of variance (ANOVA)