ABSTRACT
The aim of this manuscript is to describe a case of immediate implant placement with simultaneous bone regeneration. A brief review of the literature and the biological rationale is also described in the manuscript. Presentation of Case: A 42 years old woman Affected by a crown-root fracture referred to our Department. After careful extraction, an implant was inserted immediately as well as a simultaneous bone grafting to reduce post-extractional socket-shrinking. After osseointegration (4 months) the implant was loaded and the clinical and radiographic follow-up is presented. A Cone beam computed tomography was also made to show the integrity and the preservation of buccal bone plate one year after loading. Discussion: A traumatic extraction, three-dimensionally positioning of the fixture, the simultaneous bone graft insertion and a tension free wound closure has allowed us to achieve healing without complications and a good clinical result. Conclusion: The use of bone regeneration around immediate implant can help us to obtain good functional and esthetic outcomes.
ABSTRACT
Aim: The aim was to evaluate the safety and efficacy of the “cross-cylinder” technique in the correction of astigmatism. Setting and Design: A prospective interventional study from a university eye department was conducted. Material and Methods: The photoastigmatic refractive keratectomy (PARK) using the “cross-cylinder” technique was performed in 102 eyes of 84 patients with at least 0.75 D of astigmatism. The study population was divided into two groups: in the first group the preoperative astigmatic power ranged from –0.75 D to –3.00 D (group 1), in the second group it ranged from –3.25 D to –6.00 D (group 2). Group 1 included 82 eyes of 67 patients (29 males and 38 females) with a mean cylinder power of –1.90 ± 0.63 D, group 2 included 20 eyes of 17 patients (13 males and 4 females) with a mean cylinder power of -4.28 ± 0.76 D. All eyes were targeted for emmetropia. The results were evaluated using Calossi's vector analysis method. Six-month postoperative outcomes are presented. Results: Six months after PARK the mean sphere for the entire cohort was +0.28 ± 0.75 D (range +2.5 to –2 D), the mean cylindrical power was +0.33 ± 0.51 D (range +2.5 to –1.25 D) and the mean spherical equivalent refraction was +0.73 ± 0.81 D (range +1.75 to –2 D). Conclusions: The cross-cylinder technique may be safely used with predictable results for the correction of astigmatism.