A Survey of Removable Partial Denture (RPD) Retentive Elements in Relation to Type of Edentulism and Abutment Teeth in Commercial Laboratories in Athens

نویسندگان

  • Nick Polychronakis
  • Michael Sotiriou
  • Alcibiades Zissis
چکیده

Adresa za dopisivanje Dr Nick Polychronakis National and Kapodistrian University of Athens Dental School Division of Removable Prosthodontics Thivon 2, 11527 Athens, Greece tel i faks: +30-210-7707958 e-adresa: [email protected] Sažetak Svrha: Ovim se istraživanjem željelo istražiti retentivne elemente djelomičnih proteza (RPD) i zubne nosače kod djelomično bezubih pacijenata identifikacijom u komercijalnim atenskim zubnim laboratorijima. Materijali i metode: Procijenjeno je 628 sadrenih modela zajedno s lijevanim metalom koji se rabi za izradu djelomične skeletirane proteze. Modeli su fotografirani kako bi se mogao identificirati broj i smještaj postojećih zuba, zatim klase djelomične proteze i retentivni elementi. Za statističku analizu podataka korištene su tablice prevalencije i x testa (α=.05). Rezultati: Analizirano je 276 maksilarnih modela (43,9 %) i 352 mandibularna (56,1 %). Nedostatak maksilarnih zuba očitovao se u gotovo potpunom nedostatku desnoga (96,7%) i lijevog (96%) trećeg kutnjaka, a također je bilo premalo prvih i drugih kutnjaka. Gubitak zuba u stražnjim dijelovima mandibule pokazivao je sličan uzorak. Od uočenih retentivnih elemenata najčešće su bile kvačice ( 91,9 %), a zglobne veze (attachment) korištene su u 8,1 posto slučajeva. Od kvačica je 48,9 posto bilo Roachovih T-tipa, najčešće Kennedyjeve klase I, u usporedbi s ostalim klasama prema Kennedyju (p<0,01). Cirkumferentnih kvačica bilo 19,3 posto od ukupnog broja kvačica i najrjeđe (8,8 %) su bile iz Kennedyjeve klase I (p<0,01). Zaključak: Najčešće se koristimo Roachovim kvačicama, a RPI-kvačicama i zglobnim vezama (attachment) rijetko. Ključne riječi zubne proteze, djelomične; zubne nadogradnje; zubne kvačice; protetske precizne spojke; zubne proteze, zadržavanje Katedra za mobilnu protetiku Stomatološkog fakulteta Nacionalnoga i kapodistrijskog sveučilišta u Ateni, Grčka Division of Removable Prosthodontics, Dental School, National and Kapodistrian University of Athens, Greece

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تاریخ انتشار 2014