Nezaštićeni koštani autotransplantati u prednjem segmentu gornje vilice: stepen resorpcije i klinički rezultati

  • Ivan Kosanić Clinic of Oral Surgery, Faculty of Dental Medicine, University of Belgrade, Belgrade, Serbia
  • Miroslav Andrić Clinic of Oral Surgery, Faculty of Dental Medicine, University of Belgrade, Belgrade, Serbia
  • Božidar Brković Clinic of Oral Surgery, Faculty of Dental Medicine, University of Belgrade, Belgrade, Serbia
  • Vladimir Koković Ras Al Khaimah College of Dental Sciences, Ras Al Khaimah, United Arab Emirates
  • Milan Jurišić Clinic of Oral Surgery, Faculty of Dental Medicine, University of Belgrade, Belgrade, Serbia
Ključne reči: maxilla||, ||maksila, alveolar ridge augmentation||, ||alveolni greben, podizanje, transplantation, autologous||, ||transplantacija, autologna, dental implants||, ||stomatološki implanti, bone resorption||, ||kost, resorpcija, treatment outcome||, ||lečenje, ishod,

Sažetak


Uvod/cilj. Primena autogenih koštanih graftova (implantata) za uvećavanje smanjenog (resorbovanog) alvelarnog grebena još uvek se smatra zlatnim standardom u implantologiji. Cilj ove studije bio je analiza stepena resorpcije autolognih koštanih blok transplantata nezaštićenih barijernim mebranama, uzetih iz retromolarnog pre­dela mandibule i postavljenih u frontalni segment gornje vilice, procena stabilnosti implantata ugrađenih u povećanu regiju, kao i praćenje promene implantne stabilnosti tokom perioda oseointe­gracije. Metode. U studiju je bilo uključeno 18 pacijenata sa uku­pno 20 autotransplantata. Širina rezidualnog alveolarnog grebena merena je pre i posle postavljanja transplantata, kao i neposredno pre ugradnje implantata. Svi implantati su opterećeni privremenim nadoknadama 48 sati nakon ugradnje. Stabilnost implantata proce­njivana je primenom analize rezonantne frekvencije. Rezultati. Srednje vreme između uvećavanja grebena i ugradnje implantata iznosilo je 5,4 (4–6) meseci. Pre ugradnje implantata srednja vred­nost širine grebena iznosila je 6,1 ± 1,27 mm, a povećanja širine grebena u odnosu na vrednosti pre uvećanja 3,04 ± 1,22 mm. Po­vršinska resoprcija grafta iznosila je 18,85% (0,68 ± 0,69 mm). Srednja vrednost koeficijenta implantne stabilnosti (ISQ) u mo­mentu ugradnje iznosila je 71,25 ± 5,77. Najniže vrednosti ISQ zabeležene su u trećoj nedelji nakon ugradnje, što je bilo praćeno postepenim porastom do dvanaeste nedelje zarastanja. Nakon dvanaest nedelja vrednosti ISQ bile su statitički značajno više od vrednosti u momentu ugradnje (p < 0,05 Wilcoxon test). Tokom trogodišnjeg perioda praćenja nije bilo izgubljenih implantata.
Zaključak. Bez obzira na značajan stepen resorpcije autotransplan­tata, kod svih pacijenata bilo je moguće ugraditi implantate u uve­ćani  greben, kao i primeniti protokol ranog opterećenja bez uticaja na stepen preživljavanja implantata.

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