Coating process to sustain allogenic bone matrix for use as alveolar bones in dental disease treatment and as a support for root treatment consists of steps of the allograft preparation through freeze drying, preparation of hydrophilic polymer solution, preparation of biodegradable polymer solution, followed by the allograft coating with the hydrophilic polymer so that the polymer joins and adheres to the surface of the allograft and subsequent allograft coating with the biodegradable polymer for delaying the degradation of the bone.