2019 Flashcards
*Aggarwal - “Efficacy of articaine vs lidocaine as supplementary intraligamentary injection following failed IANB”
78% success w/ Lidocaine, 66% success with articaine. No SSD between the two.
***Setzer - “Outcome of crown and root resection”
82% success for crown resection, 87% success for root resection.
**Messing - “Potential correlations b/w endo path and CVD using epidemiological and genetic approaches”
Significant association w/ CVD. Positive correlation between AP and KCNK3 polymorphism.
***Torabinejad - “A retrospective comparison of outcome in pts who received both NSRCT and single tooth implants”
Both txs 95% survival rate with 7.5 year fu. number of appts and cost significantly higher for single tooth implant.
***Watts - “Ibuprofen and acetaminophen vs intranasal ketorolac in an untreated endodontic pain model”
Ib/Ac combo and ketorolac had same efficacy. (31.5mg K and 1000mg Ac/600mg Ib)
***Paranjpe - “Contribution of RCT to the fracture resistance of dentin”
Decrease in strength of radicular dentin by RCT. RCT teeth had more collagen cross-linking and lower tubule occlusion.
***Capetillo - “Anesthetic efficacy of intranasal 3% tetracaine w/ 0.05% oxymetazoline (kovanaze) in maxillary teeth”
Kovanaze significantly less successful in pulpal anesthesia than lidocaine. 100% of subjects preferred traditional injections over kovanaze due to SEs.
Kuhl - “Guided endo vs conventional access”
10/24 traditional vs 22/24 guided. 2X longer w/ traditional. 50mm^3 vs 10mm^3 loss of tooth structure.
Mavridou - “Regenerative Endodontic procedures…”
Failed regendo may not have huge bacterial overload but still see inflammatory cells.
**Diogenes - “Expression of neurotrophic factors in human dentin and the regulation of trigeminal neurite outgrowth”
Neurotrophins in dentin matrix proteins could play a significant role as signaling molecules for the innervation of the pulp-dentin complex during formation, repair, and regeneration. Neurotrophin 4/5 found in highest amounts.
*Patel - “Impact of different imaging techniques on anatomy and stress of residents”
3D endo software and CBCT resulted in significantly less stress, better working length determination, and less voids.
**Tawil - “Periapical microsurgery: a 4D analysis of healing patterns”
After surgery healing occurred with little to no regression of the buccal cortical plate without the use of grafting materials.
**Von Arx - “A 10 year follow up study of 119 teeth treated with apical surgery and root end filling with MTA”
Teeth treated with apical surgery and MTA root end filling had 81.5% healing. Many of the lost teeth were extracted due to longitudinal root fractures.
**Verma - “Effect of different concentration of NaOH on outcome of primary RCT”
Greater healing in high concentration (5%) than low concentration (1%) but no SSD.
***Fouad - “Longterm outcomes of endodontic treatment performed with resilon/epiphany”
Resilon treated teeth 5.3 times more likely to have a periapical index of 3-4 at follow up compared to GP. Teeth with pre op lesions most likely to have lesion at follow up.
***McDonald (on board) - “Radicular groove accessory canal morphology in mandibular first premolars”
Mandibular first premolars with radicular grooves often have radicular groove accessory canals. Association between internal and external anatomy. R6ACM detected. Avg. 8.83+/-2.5mm from CEJ.
West Virginia - “Incidence of pulpal complications after dx of vital cracked teeth”
30% had pulpal complications. 65% irreversible w/in 1.2 years. 35% necrotic after two years. 8.7X more pulpal complications without crown. 71% of teeth with reversible pulpitis when crowned remained healthy for over 3 years.
**Glickman - “Accuracy of 3D surgical endo guides”
Avg. deviation for guided 1.7mm, 2.6mm for free hand. 11/24 success free hand, 24/24 success guided.
***Siqueira - “Determination of the initial apical canal diameter by the first file to bind or CBCT measurements using micro-CT as the gold standard”
CBCT and micro-CT had god accuracy and reliability, first file to bind was inaccurate and unreliable. Mean canal diameter for CBCT was 0.22mm and for first file to bind was 0.15mm.
***Fouad - “Resilon: assessment of degraded filling material in non-healed cases”
Resilon had significantly greater rate of degradation than GP.
**Divine - “Anatomic analysis of palatal roots of maxillary molars using micro-CT”
1st molars wider M-D at CEJ. Thinner dentin on palatal aspect of root in middle/coronal 1/3. Minimum 40 master apical size. 76% no apical constriction. 3.5mm root end resection.
**Siqueira - “Root canal disinfection by single- and multiple- instrument systems: effects of NaOH volume, concentration, and retention time”
Multiple instruments, high volume of irrigation, and long retention time was best.
**Nixdorf - “Accuracy and reliability of root crack and fracture detection in teeth using MRI”
CBCT and MRI had similar sensitivity (true +) (0.59) and specificity (true -) (0.83 MRI and 0.9 CBCT)
Siqueira - “Matching dimensions of current available instruments with the apical diameters of mandibular molar mesial root canals obtained by micro-CT”
78% of apical canals not completely by any instrument, ideal instrument size/taper to include all canal walls in apical prep is too large to be safe for clinical use.
***Setzer - “Outcome of endodontic microsurgery using MTA or root repair material as root-end filling material”
Overall success of 93% on PA vs 85% on CBCT with no difference between MTA or root repair material.
***Frick - “Effects of alpha-tocopherol antioxidant on dentin-composite microtensile bond strength after sodium perborate bleaching”
Application of 20% alpha-tocopherol not effective in counteracting deleterious effect of bleaching on bond strength, need to wait about 2 weeks before restoring.
Ruparel - “Effect of a residual biofilm on release of transforming growth factor B1 from dentin”
Sterile root canals released greater amounts of TGF-B1.
Von Arx - “Tadiographic assessment of bone healing using CBCT scans 1 and 5 years after apical surgery”
New hard tissue formation at the resection plane and within former apical defect in most cases at 5 years, reestablishment of the cortical plate lagged behind. Periapical healing is not complete after 1 year, need longer follow up.
Georgiou - “apical periodontitis is associated with elevated concentrations of inflammatory mediators in peripheral blood”
Apical periodontitis contributes to low grade systemic inflammation through increased C reactive protein, IL-6, and C3 levels
**Von Arx - “Proximity of vascular bone channel in the lateral sinus wall to root apices of maxillary first molars”
The vascular bone channel was found closer to the MB root (6.18mm) than DB root and mostly located intrasinusly.
Wang - “Over-expression of cyclophillin A in human periapical lesions”
Cyclophillin A
