Shingo Kato1, Daniele Botticelli2,3, Enzo De Santis1,4, Masatsugu Kanayama1, Sabrina Ferreira5, Idelmo Rangel-Garcia5. 1. ARDEC Academy, viale Giovanni Pascoli, 67 47923, Rimini, Italy. 2. ARDEC Academy, viale Giovanni Pascoli, 67 47923, Rimini, Italy. daniele.botticelli@gmail.com. 3. Fundación ARDEC, Cartagena de Indias, Colombia. daniele.botticelli@gmail.com. 4. Fundación ARDEC, Cartagena de Indias, Colombia. 5. UNESP, Faculty of Dentistry of Araçatuba, State University of São Paulo, Araçatuba, SP, Brazil.
Abstract
AIM: To evaluate the modifications and possible perforations of the sinus mucosa lining graft particles and implant surfaces after sinus lifting. MATERIAL AND METHODS: Twelve New Zealand rabbits underwent a bilateral sinus lifting using either autogenous bone harvested from the tibia (AB; autogenous bone group) or deproteinized bovine bone mineral (DBBM group) as filler. Implants were simultaneously installed. Thinned sites (<40 μm) and perforations were histologically evaluated at the sinus mucosa in contact with the graft and with the implant after 7 and 40 days of healing. RESULTS: The mean width of the pristine mucosa was ~70-80 μm. After 7 days of healing, the sinus mucosa in contact with the graft presented fourteen thinned sites in the AB group (mean width 28.8±12.8 μm) and fifty-nine in the DBBM group (mean width 22.2±5.2 μm). No perforations of the mucosa were seen in the AB group while six perforations distributed in two sinuses were found in the DBBM group. After 40 days, only one thinned mucosa and no perforations were observed in the AB group while ninety-six thinned mucosa sites were shared by six sinuses (19.2±3.8 μm), and 3 perforations by two sinuses in the DBBM group. Few sites of the mucosa were in contact with the implant apex and threads after 7 days of healing. However, after 40 days, twelve thinned mucosa sites were seen in four sinuses in the AB groups (mean width ~19 μm) and 5 in two sinuses in the DBBM group (mean width ~20 μm). Perforations were seen in two sinuses in the AB group, and in one sinus in the DBBM group. CONCLUSIONS: The sinus mucosa might be damaged by a close contact with graft particles and implant surface.
AIM: To evaluate the modifications and possible perforations of the sinus mucosa lining graft particles and implant surfaces after sinus lifting. MATERIAL AND METHODS: Twelve New Zealand rabbits underwent a bilateral sinus lifting using either autogenous bone harvested from the tibia (AB; autogenous bone group) or deproteinized bovine bone mineral (DBBM group) as filler. Implants were simultaneously installed. Thinned sites (<40 μm) and perforations were histologically evaluated at the sinus mucosa in contact with the graft and with the implant after 7 and 40 days of healing. RESULTS: The mean width of the pristine mucosa was ~70-80 μm. After 7 days of healing, the sinus mucosa in contact with the graft presented fourteen thinned sites in the AB group (mean width 28.8±12.8 μm) and fifty-nine in the DBBM group (mean width 22.2±5.2 μm). No perforations of the mucosa were seen in the AB group while six perforations distributed in two sinuses were found in the DBBM group. After 40 days, only one thinned mucosa and no perforations were observed in the AB group while ninety-six thinned mucosa sites were shared by six sinuses (19.2±3.8 μm), and 3 perforations by two sinuses in the DBBM group. Few sites of the mucosa were in contact with the implant apex and threads after 7 days of healing. However, after 40 days, twelve thinned mucosa sites were seen in four sinuses in the AB groups (mean width ~19 μm) and 5 in two sinuses in the DBBM group (mean width ~20 μm). Perforations were seen in two sinuses in the AB group, and in one sinus in the DBBM group. CONCLUSIONS: The sinus mucosa might be damaged by a close contact with graft particles and implant surface.
Entities:
Keywords:
Animal study; Bone healing; Perforation; Sinus floor elevation; Xenograft
Authors: Emeka Nkenke; Andreas Schlegel; Stefan Schultze-Mosgau; Friedrich W Neukam; Jörg Wiltfang Journal: Int J Oral Maxillofac Implants Date: 2002 Jul-Aug Impact factor: 2.804
Authors: Gian Maria Ragucci; Basel Elnayef; Fernando Suárez-López Del Amo; Hom-Lay Wang; Federico Hernández-Alfaro; Jordi Gargallo-Albiol Journal: Int J Implant Dent Date: 2019-02-05