Tip of florida probe diameter
0.4 mm
Hydroxyapatite in supraginfival
58%
Mg whitelockite 21%
Octacalcium po4 12%
Suture needle used in perio surg
3/8 circle reverse cuttin edge and 3-0 black braided
Radius of action of plaque to induce alv bone liss
1.5-2.5mm
Diameter of bristles
Soft
Med
Hard
Soft 0.007 ,0.012,0.014 inch or 0.2,0.3,0.4 mm
Mean sulcus depth of children
2.1+/-0.2 mm
Avg daily incrememnt of calculus formation
0.1-0.15%
Rapid progression of perio disease has yearly loss of
0.1-1mm of attachmwnt loss
HLA antigen in aggresssive periodonyitis
HLA A9 and B15
Thicknrss of cementum at 60 yrs
250 microns meter
Csf glucose level
45-55 mg/dl
Minimum length of sxrew for fixation of plate
4 mm
Longes acting la
Bupivacaine 0.5% epinephrine 1:200000
Antiarrythmic effect of la in the dosage of
1.5-5microgram/ml
Conduction velocity of a alpha fibers
30-120 m/s
Diameter of a delta fibers
1-4 microns
ECG changes are seen when the lignocaine level is more than
5-10microgram/ml
Maximum dose of adrenaline in
Healthy pt
Cvs disease pt
- 2mg
0. 04mg
Anesthetic half life of lidocaine
90 mins
Maximum tip deflection of 27 gauge long needle
8.4mm
Positive aspiration in relation to inferior alveolar block is
10-15% maximum with this
Avg depth of soft tissue penetration in gow gates
25 mm
Positive aspiration of gow gates is
2%
Time of onswt of anaesthsia in ianb
3-5mins
