2 research outputs found
PATIENT SATISFACTION WITH SEDATION FOR PERIODONTAL SURGERY: A RANDOMIZED, CROSS-OVER CLINICAL STUDY
PURPOSE: To create a study designed to assess patient satisfaction and preference for oral versus intravenous sedation in conjunction with periodontal surgical procedures. METHODS: Twenty-six patients who required at least two periodontal surgery procedures and requested sedation for treatment, participated in our study at VCU Department of Periodontics. This was a randomized, cross-over design with groups which received an intravenous sedative regimen with or without oral sedation premedication for one surgery and oral sedation medication alone for the other surgery. The primary outcome measurement was the type of sedation preferred by the subject. RESULTS: 14/26 (53.8%) subjects indicated a preference for intravenous sedation, compared with 7/26 (26.9%) subjects who preferred oral sedation alone. 1/26 (3.8%) subject reported that they would prefer no sedation after experiencing both oral and oral/intravenous combination sedation methods. 4/26 (15.3%) of the subjects who completed the study reported “No Difference” with regards to their preference for either method of sedation. CONCLUSION: More subjects preferred intravenous sedation and would consent to the sedation again for any future needed surgery. This study supports the need to offer intravenous sedation with periodontal surger
Measurement of the diffractive cross-section in deep inelastic scattering
Diffractive scattering of , where is either a
proton or a nucleonic system with ~GeV has been measured in deep
inelastic scattering (DIS) at HERA. The cross section was determined by a novel
method as a function of the c.m. energy between 60 and 245~GeV
and of the mass of the system up to 15~GeV at average values of
14 and 31~GeV. The diffractive cross section is,
within errors, found to rise linearly with . Parameterizing the
dependence by the form d\sigma^{diff}/dM_X \propto
(W^2)^{(2\overline{\mbox{\alpha_{_{I\hspace{-0.2em}P}}}} -2)} the DIS data
yield for the pomeron trajectory
\overline{\mbox{\alpha_{_{I\hspace{-0.2em}P}}}} = 1.23 \pm 0.02(stat) \pm
0.04 (syst) averaged over in the measured kinematic range assuming the
longitudinal photon contribution to be zero. This value for the pomeron
trajectory is substantially larger than
\overline{\mbox{\alpha_{_{I\hspace{-0.2em}P}}}} extracted from soft
interactions. The value of \overline{\mbox{\alpha_{_{I\hspace{-0.2em}P}}}}
measured in this analysis suggests that a substantial part of the diffractive
DIS cross section originates from processes which can be described by
perturbative QCD. From the measured diffractive cross sections the diffractive
structure function of the proton F^{D(3)}_2(\beta,Q^2,
\mbox{x_{_{I\hspace{-0.2em}P}}}) has been determined, where is the
momentum fraction of the struck quark in the pomeron. The form F^{D(3)}_2 =
constant \cdot (1/ \mbox{x_{_{I\hspace{-0.2em}P}}})^a gives a good fit to
the data in all and intervals with $a = 1.46 \pm 0.04 (stat) \pmComment: 45 pages, including 16 figure