José Viña-Almunia

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The aim of this paper was to review the procedures adopted when a perforation of the sinus membrane takes place during a direct sinus lift for filling with bone graft; and the survival of implants in those cases in which perforation of the sinus membrane occurred. A bibliographical search in PUBMED was carried out of articles published from 1997 to 2008,(More)
High rates of stem cell proliferation are important in regenerative medicine and in stem cell banking for clinical use. Ambient oxygen tensions (21% O2) are normally used for in vitro culture, but physiological levels in vivo range between 3% and 6% O2. We compared proliferation of human dental pulp stem cells (hDPSCs) cultured under 21% versus 3% O2. The(More)
OBJECTIVES To investigate the relation between occlusal loading and peri-implant clinical parameters (probing depth, bleeding on probing, gingival retraction, width of keratinized mucosa, and crevicular fluid volume) in patients with implant-supported complete fixed prostheses in both arches. MATERIAL AND METHODS This clinical study took place at the(More)
Human dental pulp stem cells (hDPSCs) are a source for cell therapy. Before implantation, an in vitro expansion step is necessary, with the inconvenience that hDPSCs undergo senescence following a certain number of passages, loosing their stemness properties. Long-term in vitro culture of hDPSCs at 21% (ambient oxygen tension) compared with 3-6% oxygen(More)
PURPOSE The aim of this systematic review was to analyze the accuracy of implant placement using computer-guided surgery and to compare virtual treatment planning and outcome in relation to study type (in vitro, clinical, or cadaver). A further objective was to compare the accuracy of half-guided implant surgery with that of full-guided implant surgery. (More)
BACKGROUND Dental implant placement using flapless surgery is a minimally invasive technique that improves blood supply compared with flapped surgery. However, the flapless technique does not provide access to allow bone regeneration. OBJECTIVE The aim of this systematic review was to evaluate the clinical parameters following implant surgery in healed(More)
BACKGROUND Different methods have been used in order to isolate dental pulp stem cells. The aim of this study was to study the effect of different types of pulp treatment during isolation, under 3% O2 conditions, in the time needed and the efficacy for obtaining dental pulp stem cells. MATERIAL AND METHODS One hundred and twenty dental pulps were used to(More)
PURPOSE To review morphometric studies performed in animals assessing the dynamics of the buccal bone crest after immediate implant placement and ridge preservation techniques. MATERIAL AND METHOD A bibliographic search in PubMed was performed. Studies that analyzed morphometrically in animals the buccal bone crest dynamics after immediate implant(More)
PURPOSE To evaluate the soft tissue response in posterior teeth adjacent to interdental single implants comparing intrasulcular and trapezoidal incision, and to study their evolution over time. MATERIALS AND METHODS A controlled randomized clinical trial was carried out in the Oral Surgery and Implantology Unit of a University Clinic. All the included(More)
A literature review is made to analyze the survival of implants placed with the osteotome technique. A PubMed search was made based on the key words "osteotome AND dental implants", corresponding to publications between 1998-2008. The inclusion criteria were: a) a minimum of 10 patients; b) a minimum follow-up of 6 months; c) implants placed using the(More)
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