Periodontal parameters around porous‐coated dental implants after 3 to 4 years supporting overdentures

Abstract

In this study, an assessment using modified periodontal indices was done on a group of 48 fully edentulous patients who had each been treated with 3 porous-coated (EndoPore) dental implants and a mandibular overdenture. Parameters assessed included plaque index (PI), sulcular bleeding index (SBI), pocket probing depth (PD), probing attachment level (PAL) and mobility (M) using a Periotest device. At the time of the assessment, all of the patients had passed 3 years of continuous function while 26 had passed 4 years. Approximately 50% of implant surfaces were plaque-free while 79% of surfaces showed no bleeding upon probing. There was no correlation between PI and SBI. The mean PD was 3.1 mm with 64% of sites < or = 3.5 mm. Mobility measurements taken with the Periotest device gave a mean PTV of (-4.35) with 96% of measurements (-0.5). No significant correlations were found between mobility and either PAL or implant length.

Influence of Implant Surface Topography and Loading Condition on Stress Distribution in Bone Around Implants: A Comparative 3D FEA

“…The implant was designed as a solid machined core surrounded by porous coating consisting of two to three layers of microspheres. These microspheres have an average diameter of 100 lm, thus giving a porous coating of 300 lm thickness [9]. The diameter of microsphere was chosen so that the resulting pore size created a space between two microspheres, which would be amenable to bone ingrowth [14].…”

“…1 3D solid model of the bone segment). A three-dimensional model of Endopore Implant (Innova corporation, Toronto) [8][9][10][11] with dimensions of 4.1 mm diameter and 12 mm length with a 1 mm smooth coronal region with a suitable abutment was generated [12] (Fig. 2 3D solid model of implant with abutment).…”

Study of Biomechanics of Porous Coated Root Form Implant Using Overdenture Attachment: A 3D FEA

“…The surface of the implant was designed with a porous coating [23,24] consisting of two to three layers of micro spheres. These spherical particles have an average diameter of 100 lm and a porous coating of 300 lm thickness [17,30] amenable to bone tissue-ingrowth [23]. A row of thin interface elements was placed between the porous root and the bone to model the tissue-ingrowth bonded interface (Fig.…”

“…These were commercially available as Endopore implants (EndoPore TM ) [17,27,28]. They were of 12 mm in length [29] and 4.1 mm in diameter with 58 taper [18,28] and the root portion was 10 mm long.…”

“…A porous coated implant surface [17][18][19][20] was taken to study the biomechanical aspects compared to smooth surface. A three dimensional anatomical model of the mandible probably gives a closer representation of stress behaviour and may act as theoretically superior tool when compared to simpler two or three dimensional models.…”