ABSTRACT
PURPOSE: The purpose of the study is to show the excellent anatomical result of the inverted flap-assisted technique with PRP under air for retinitis pigmentosa complicated with macular hole. METHODS: A 32-year-old woman, previously diagnosed with retinitis pigmentosa, was referred to our department complaining of decreased central vision in her LEFT eye for 4 weeks. At the time of presentation, the optical coherence tomography and fundoscopy examination showed the presence of a macular hole of 620 microns in diameter. The closure of the macular hole was observed after the surgical procedure, but endophthalmitis occurred 5 days postoperatively. RESULTS: In our presented case, the cover flap-assisted technique with PRP under air for retinitis pigmentosa complicated with macular hole resulted in excellent anatomical outcomes with unremarkable visual recovery. CONCLUSION: The physiopathology of full-thickness macular holes in RP patients remains still not fully elucidated. Pars plana vitrectomy with the adjunct of highly concentrated P-PRP have shown successful results.
ABSTRACT
OBJECTIVE: The aim of this research is to describe and to analyse the long-term results and the clinical steps of direct fragment reattachment technique with no additional tooth preparation, used to treat crown fracture. This technique achieves the clinical success, combining satisfactory aesthetic and functional results with a minimally invasive approach. METHODS: The 3 years follow-up included 9 patients (5 males, 4 females) with coronal fracture. In all the cases the fragment was available and intact. The authors illustrate the adhesive procedure used. Under local anaesthesia and after positioning the rubber dam, both the tooth and the fragment surface were etched, rinsed and applied by the adhesive system in order to obtain the retention of the fractured part to the tooth without additional tooth preparation or resin cement. RESULTS: The statistical analysis shows the good performances of direct fragment reattachment technique. After 36 months, in 22.2% of the cases, the detachment was observed of the bonded fragment and in 11.1% of patients, complications were recorded. CONCLUSION: Our clinical experience shows how the ultra-conservative procedure used is fast, easy and offers a long term predictability; it also allows good functional and aesthetic outcomes.
ABSTRACT
BACKGROUND: Auxiliary power sources (LED and laser) are used in in-office teeth bleaching techniques to accelerate the redox reaction of the whitening gel to increase ease of use, to improve comfort and safety, and to decrease the procedure time. OBJECTIVE: The aim this study is to evaluate the efficiency of the teeth whitening procedures performed with hydrogen peroxide and carbamide peroxide, LED or Laser activated. METHOD: 18 patients, affected by exogenous dyschromia, were treated with a bleaching agent composed by 35% hydrogen peroxide and 10% carbamide peroxide. They were divided into two groups: in the first group the bleaching agent was activated by a LED lamp; in the second group it was activated by a Laser diode lamp. Both groups were subjected to 3 bleaching cycle of 15' each. The chromatic evaluations were performed before and after one week from the treatment, using a chromatic scale and a spectrophotometer. The mean value of pre, post bleaching and follow-up were analyzed using a T-test, with results statistically significant for P<0,05. RESULTS: Results showed that the variations in brightness, chroma and hue are significantly influenced by the interaction between the whitening agent and the original colour of the teeth. Laser-activation has marginally improved the bleaching effectiveness. All patients treated with laser activation complained an increase in dental sensitivity. CONCLUSION: The use of laser-activating systems did not improve the efficacy of bleaching.
