Hydroxyapatite motility implants in ocular prosthetics

Cowper, Thomas R.

doi:10.1016/s0022-3913(05)80204-5

Cited by 10 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[1][2][3][4] HA is widely used in reconstructive surgery as an artificial biomaterial, such as in synthetic auditory ossicle (Apaceram), 1 artificial eyes, 2 artificial tooth roots, 3 and artificial knees. 4 However, there is limited understanding of the cellular and tissue response to HA.…”

Section: Introductionmentioning

confidence: 99%

Thickness of fibrous capsule after implantation of hydroxyapatite in subcutaneous tissue in rats

Ohsaki

Kunio

et al. 1999

J. Biomed. Mater. Res.

View full text Add to dashboard Cite

The present study evaluates in rats the histomorphometrical thickness of fibrous capsules that surround hydroxyapatite (HA) disks after implantation. HA disks were implanted into the subcutaneous tissue of 79 rats for 1 day to 20 months. Decalcified histological sections stained with hematoxylin and eosin were examined. Fibrous capsule thickness (FCT) was measured using an objective micrometer. On the fourteenth day, primary fibrous capsules formed around implants. From that time point FCT increased with time of implantation. Within a given sample, FCT differed from one portion of the fibrous capsule to another, depending on which site faced the disks. FCT was thickest at the upper and lower portions of the disks, thinner at the lateral portions, and thinnest at the upper and lower ring-shaped portions. Two possible explanations for the above findings are discussed in this paper: (1) The area of contact between disk and tissue differs. (2) Chemical stimulation of implanted material caused by demineralization and remineralization may result from the varying thicknesses of fibrous capsules. FCT from upper and lower portions of HA disks increased by over 200% in the first 10 months and steadily increased about 20% over the next 10 months. Many studies have concluded that HA is useful for reconstructive surgery, so the long-term effects of FCT need further study.

show abstract

Section: Introductionmentioning

confidence: 99%

Thickness of fibrous capsule after implantation of hydroxyapatite in subcutaneous tissue in rats

Ohsaki

Kunio

et al. 1999

J. Biomed. Mater. Res.

View full text Add to dashboard Cite

show abstract

“…The large volume deficiency, the inherent weakness of the supporting eyelid musculature and a large prosthesis resulted in tilting of the prosthesis posteriorly and inferior settling leading to long‐term aesthetic problems. This migration produced a deep superior sulcus and ptosis of the superior lid, enophthalmia, dystopia and ptosis of the ocular prosthesis; and eventual sagging of the inferior lid and lateral canthus 21 . Motility implants are now used in an attempt to overcome these problems.…”

Section: Review Of Literaturementioning

confidence: 99%

Ocular prosthesis: a brief review and fabrication of an ocular prosthesis for a geriatric patient

Patil

Meshramkar

Naveen³

et al. 2008

Gerodontology

View full text Add to dashboard Cite

show abstract

“…Many patients decline the secondary peg procedure because the movement produced by the primary implant alone is satisfactory (Cowper, 1995;Edelstein et al, 1997). In addition to escalating costs, some studies have reported peg-related complication rates as high as 45% (Pacheco et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Improved Non-Coupled Prosthetic Motility Utilizing Motility-Enhancing Fornix Sutures

Abdeen¹,

Elgazayerli²,

Abdulhafez³

et al. 2009

Orbit

View full text Add to dashboard Cite

show abstract

Hydroxyapatite motility implants in ocular prosthetics

Cited by 10 publications

References 11 publications

Thickness of fibrous capsule after implantation of hydroxyapatite in subcutaneous tissue in rats

Thickness of fibrous capsule after implantation of hydroxyapatite in subcutaneous tissue in rats

Ocular prosthesis: a brief review and fabrication of an ocular prosthesis for a geriatric patient

Improved Non-Coupled Prosthetic Motility Utilizing Motility-Enhancing Fornix Sutures

Contact Info

Product

Resources

About