Mahallesiyle muhtarıyla İstanbul

Taha Toros Arşivi, Dosya Adı: İstanbul Genel Dokümanlarıİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033)Hızlı kentleşme, düzensiz yapılaşmanın bedeli:Toprağı saksıda göreceğizHer mahalleye bir paza

A randomized prospective comparative study of nerve stimulator and ultrasonogram in popliteal sciatic nerve block for ankle and foot surgeries

Background: Regional blocks in the field of anaesthesia were done traditionally with paraesthesia technique. To overcome the demerits with paraesthesia technique, nerve locator was applied for nerve blocks. Later, the application of ultrasonogram for regional blocks got the real time imaging of the nerves and drug administration. This resulted in publications of numerous studies with variable results. Therefore we planned to compare ultrasonogram and nerve locator in popliteal sciatic nerve block in our population.Methods: A prospective, randomized, observer blinded study was planned to compare the nerve stimulator (Group N) and ultrasound (Group U) on duration of ‘block technique’, number of needle reinsertions in popliteal sciatic nerve block for ankle and foot surgeries. We included all consented patients aged ≥18 years of both genders belonging to ASA I to III and excluded pregnant mothers, diabetes mellitus, neuropathy, chronic opioid use, positioning difficulty, coagulopathy, nerve block contraindications, local anaesthetic allergic patients.Results: The duration of block technique in Group U = 262.00 ± 108.36 Seconds and Group N = 715.16 ± 234.66 Seconds with statistically significant P value = 0.0001. The average number of needle reinsertions in Group N = 6.05 ± 2.31 and Group U = 2.46 ± 1.11 with statistically significant p value of 0.0001. Therefore the time taken to perform the block and the number of needle reinsertions in Group U is shorter than the Group N.Conclusion: The duration of block technique and number of needle reinsertions are better with ultrasound. Though the onset of motor and sensory blockade were better with ultrasound success rate is not significantly different.

Effetto della quantità di tessuti coronali sulla resistenza di denti restaurati con perni

RiassuntoObiettiviConfrontare la resistenza a frattura e il tipo di fallimento di denti devitalizzati con un numero progressivamente ridotto di pareti coronali residue, ricostruiti con compositi e perni in fibra di vetro.Materiali e metodiNovanta premolari sono stati devitalizzati e suddivisi come segue: gruppo 1: 4 pareti; gruppo 2: 3 pareti; gruppo 3: 2 pareti; gruppo 4: 1 parete; gruppo 5: 0 pareti. I gruppi da 2 a 5 sono stati suddivisi in due sottogruppi: ricostruiti senza e con perni in fibra. I campioni sono stati fratturati e analizzati statisticamente.RisultatiSono stati registrati i seguenti valori di frattura: 5a>5b>4b>3b>1>4a>2b>3a>2a.ConclusioniI perni hanno determinato prevalentemente fratture restaurabili. Il numero di pareti residue ha influenzato la resistenza a frattura.SummaryObjectivesTo compare the fracture resistance and failure patterns of endodontically treated teeth with a progressively reduced number of residual walls restored using composites and posts.Materials and methodsAfter endodontic treatment, 90 premolars were divided as follows: group 1: 4 walls; group 2: 3 walls; group 3: 2 walls; group 4: 1 wall; group 5: 0 walls. Groups 2 to 5 were divided into subgroups, without and with posts. Fracture tests and statistical analyses were performed.ResultsThe following loads were recorded: 5a>5b>4b>3b>1>4a>2b>3a>2a.ConclusionsThe samples restored with fiber posts exhibited predominantly restorable fractures. The number of residual walls influenced the fracture resistance

Influence of test parameters on in vitro fracture resistance of post-endodontic restorations: a structured review

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75093/1/j.1365-2842.2009.01940.x.pd