Virtual dental expo

Check Page Ranking

Dental tourism
Dental books
Bad breath
Kids caries
Smoking effects
Patient info
Dental Videos
Wisdom tooth
Drugs of choice
Endo tips    Better Endo    Endo abstracts    Endo discussions

The opinions within this web page are not ours. Authors have been given due credit

Roots Digest 3

From: kendo To: ROOTS Sent: Sunday, July 05, 2009 6:17 PM To: ROOTS Subject: [roots] Uh oh........the smell of napalm Part III I'd ask that folks review the material sent............the objective is to make a difference.......... It demonstrates what I've urged forever; messages left in cyberspace serve no repackage and create a brand that is identified with the contributions of a cybercommunity or a postdoctoral endo program, ergo which I am giving up on at least in terms of being a pest............. it seems simply just plain wrong to stay limited in scope on the Internet. It's the most positive viral force on the planet re; informatics....... .....once we appreciate that material of whatever nature, from whatever source is always going to make the rounds if it has value, we appreciate that content is king and endless if we are clever and not inwardly focused...........PAY IT FORWARD was a lousy movie, but a brilliant does work......... So take a it to shreds, but consider doing what Enrique, Gustavo and so many others do, EDUCATE........ PARTICIPATE and COLLABORATE. ........Kendo Continued from Page 2
Fig 13 While there is no meta-analysis to elucidate this concern, the incidence of fracture of the mesial root of mandibular molars has been shown to have a significant correlation to cuspal fracturing..
Fig 14a The working length has two reference points, coronal and apical. Failure to maintain patency at the minor apical diameter will cause loss of the apical reference point as a result of blockage, or ellipticization of the foramen.
Fig 14b The volume of irrigant necessary to prevent apical blockage is indeterminant. While NiTi rotary instrumentation has minimized this procedural problem to a significant degree, nonetheless, a slurry of dentin mud is always a risk factor to be monitored.
Fig 15 Rheology is a science that addresses the deformation and flow of matter. The biochemistry of filling material, its viscosity gradient, the lubricating effect of sealer and optimal thermal application are only as effective as the flow characteristics of the shape created and its degree of cleanliness.
Fig 16a - The ProTaper Universal System comprises two shaping files that address the planes of geometry of the coronal and middle thirds of the root canal space. There are five finishing files that include tips sizes, 20, 25, 30, 40 and 50. Tapers range from .06 to .09 through the series. A thorough understanding of the metrics is essential for the preparation of the myriad variations in internal micro-morphology of the root canal space and the assurance of minimal iatrogenic impact.
Fig 16b Modification of taper in last mm of the apical terminus, exaggerates the constriction or minor apical diameter. Thermo-labile vertical condensation has been shown to enhance successful endodontic outcomes. The matrix effect of the apical control zone enhances the gravitometric density of the required hermetic apical seal as well as enabling more material to flow into the region to occlude fins, cul-de-sacs, deltas and lateral arborizations.
Contd....Page 1


1.  Farzaneh M, Abitbol S, Lawrence H, Friedman S. Treatment Outcome in Endodontics
    The Toronto Study. Phase II: Initial Treatment. J Endod 2004 May;30(5):302-309
2.  Bero L, Rennie D. The Cochrane Collaboration. Preparing, maintaining, and disseminating systematic reviews of
    the effects of health care. JAMA 1995 Dec;274(24): 1935-1938
3.  Salehrabi R, Rotstein I. Endodontic treatment outcomes in a large patient population in the USA: an epidemiological
    study. J Endod 2004 Dec;30(12):846-50
4.  Cagidiaco MC, García-Godoy F, et al. Placement of fiber prefabricated or custom made posts affects the 3-year survival
    of endodontically treated premolars. Am J Dent 2008 Jun;21(3):179-84
5.  Dietschi D, Duc O, Krejci I, Sadan A. Biomechanical considerations for the restoration of endodontically treated teeth:
    a systematic review of the literature, Part II (Evaluation of fatigue behavior, interfaces, and in vivo studies).
    Quintessence Int 2008 Feb;39(2):117-29
6.  Aquilino SA, Caplan DJ. Relationship between crown placement and the survival of endodontically treated teeth.
    J Prosthet Dent  2002 Mar;87(3):256-63
7.  Dorn SO, Moodnik RM, Feldman MJ, Borden BG. Treatment of the endodontic emergencies: A report on a questionnaire.
    Part I. J Endod 1977;3:94 100
8.  Gatewood RS, Himel VT, Dorn SO. Treatment of the endodontic emergency: A decade later. J Endod 1990;16:284 91
9.  Siqueira, J F. Endodontic infections: Concepts, paradigms, and perspectives.
    OS, OM, OP, OR & Endo Sept 2002;94(3):281-293
10.Siqueira JF Jr, Guimarães-Pinto T, Rôças IN. Effects of chemomechanical preparation with 2.5% sodium hypochlorite and
    intracanal medication with calcium hydroxide on cultivable bacteria in infected root canals.
    J Endod. 2007 Jul;33(7):800-5
11.Baumgartner JC, Hutter JW, Siqueira JF. Endodontic Microbiology and Treatment of Infections.
    In: Cohen S, Hargreaves KM, editors. Pathways of the Pulp. Ninth ed. St. Louis: Mosby; 2006
12.Baumgartner JC, Xia T. Antibiotic susceptibility of bacteria associated with endodontic abscesses.
    J Endod 2003;29(1):44-47
13.Khemaleelakul S, Baumgartner JC, Pruksakorn S. Identification of bacteria in acute endodontic infections and their
    antimicrobial susceptibility. Oral Surg Oral Med Oral Pathol 2002;94(6):746-55
14.Grondahl H-G, Huumonen S.  Radiographic manifestation of periapical inflammatory lesions.
    Endodontic Topics 2004;8:55-67
15.Scarfe WC, Farman AG, Sukovic P.  Clinical applications of cone-beam computed tomography in dental practice.
    JCDA 2006;72:75-80
16.Pinksy HM et al.  Accuracy of three-dimensional measurements using cone-beam CT.
    Dentomaxillofacial Radiology 2006;35:410-6
17.Iwai et al. Estimation of effective dose from limited cone beam x-ray CT examination.
    Dental Radiology (Japanese) 2001;50:251-9
18.Patel S, Dawood A, Whaites E, Pitt Ford T. The potential applications of cone beam computed tomography in the
    management of endodontic problems. Int EndoJournal 2007;40:818-30
19.Estrela C. Accuracy of Cone Beam Computed Tomography and Panoramic and Periapical Radiography for Detection of
    Apical Periodontitis. J Endo 2008;34(3):273-279
20.Simon JHS, Enciso R, Malfaz JM, Rogers R, Bailey-Perry M, Patel A. Differential diagnosis of large periapical
    lesions using cone-beam computed tomography measurements and biopsy. J Endod 2006;32:833 7
21.Iqbal MK, Johansson AA, Akeel RF, Bergenholtz A, Omar R. A retrospective analysis
    of factors associated with the periapical status of restored, endodontically treated
    teeth.  Int J Prosthodont 2003;16:31 8
22.Siqueira JF Jr, Rocas IN, Favieri A, Abad EC, Castro AJ, Gahyva SM. Bacterial leakage
    in coronally unsealed root canals obturated with 3 different techniques. Oral Surg
    Oral Med Oral Pathol Oral Radiol Endod 2000;90:647 50
23.Schwartz RS, Fransman R. Adhesive Dentistry and Endodontics: Materials, Clinical Strategies and Procedures for
    Restoration of Access Cavities: A Review. J Endod March 2005;(31)3:151-165
24.Zehnder M, Kosicki D, et al. Tissue-dissolving capacity and antibacterial effect of buffered and unbuffered
    hypochlorite solutions. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontics;(94):756-762
25.Sjogren U, Figdor D, Persson S, Sundqvist G. Influence of Infection at the time of root filling on the outcome of
    endodontic treatment of teeth with apical periodontitis. Int Endo Journal Sept 1997;(30)5:297-306
26.Siqueira JF, Rôças IN, et al. Chemomechanical Reduction of the Bacterial Population in the Root Canal after
    Instrumentation and Irrigation with 1%, 2.5%, and 5.25% Sodium Hypochlorite. J EndodonJune 2000;(26)6:331-334
27.Torabinejad M, Cho Y, Khademi AA, Bakland LK, Shabahang S. The effect of various concentrations of sodium
    hypochlorite on the ability of MTAD to remove the smear layer. J Endod 2003;(29):233 239
28.Siqueira JF Jr, Rocas IN, Santos SR, Lima KC, Magalhaes FA, de Uzeda M. Efficacy of instrumentation techniques and
    irrigation regimens in reducing the bacterial population within root canals. J Endod 2002;28:181 184
29.Niu W, Yoshioka T, Kobayashi C, Suda H. A scanning electron microscopic study of dentinal erosion by final irrigation
    with EDTA and NaOCl solutions. Int Endod J 2002;35:934–939
30.Lin LM, Rosenberg PA, Lin J. Do procedural errors cause endodontic treatment failure? JADA 2005;(136) 2:187-193
31.De-Deus G et al.  Dye extraction results on bacterial leakproof root fillings. J Endo Sept 2008;(34)9:1093-5
32.Barthel CR, Moshonov J, Shuping G, Orstavik D. Bacterial leakage versus dye leakage in obturated root canals.
    Int Endod J 1999;32:370 5
33.Kersten HW, Moorer WR. Particles and molecules in endodontic leakage. Int Endod J 1989;22:118-24
34.Oliver CM, Abbott PV. Correlation between clinical success and apical dye penetration.
    Int Endod J 2001;34:637-44
35.Paqué F, Sirtes G. Apical sealing ability of Resilon/Epiphany versus gutta-percha/AHPlus: immediate and 16-months
    leakage. Int Endod J. 2007 Sep;40(9):722-9
36.Cruse WP, Bellizzi R. A historic review of endodontics 1689-1963, Part I. J Endod,1980; 6:495-499
37.Blaney JR.  The biologic aspect of root canal therapy. Dental Items of Interest 1927;49:681-708
38.Schilder H. Filling root canals in three dimensions. Dental Clinics of North America 1967;723-44
39.Ingle H: Endodontics, ed 5, Hamilton, London, 2002 BC Decker
40.Wu MK, Fan B, Wesselink PF. Leakage along apical root fillings in curved root canals. I.
    Effects of apical transportation on seal of root fillings J Endodon 2000;(26):210
41.Siqueira JF Jr. Aetiology of the endodontic failure: why well-treated teeth can fail. Int Endod J 2001;34:110
42.Roggendorf et al. Bacterial leakage in filled root canals using four root canal sealers. IEJ Dec 2007;40(2):
    Abstract R3.86
43.Roedl et al. Bond strength to root canal dentine following different irrigation protocols using a new testing method.
    IEJ Dec 2007;(40)12:Abstract R3.66
44.Raina R et al. Evaluation of the Quality of the Apical Seal in Resilon/Epiphany and Gutta-Percha/AH Plus filled
    Root Canals by Using a Fluid Filtration Approach J Endod;(33)8:944-47
45.Teixeira FB, et al.  Fracture resistance of roots endodontically treated with a new resin filling material.
    JADA 2004;(135)5:646-652
46.Sly MM, Moore BK, Platt JA, Brown CE.  Push-out bond strength of a new endodontic obturation system
    (Resilon/Epiphany). J Endod. 2007 Feb;33(2):160-2
47.Williams C, Loushine R et al. A Comparison of Cohesive Strength and Stiffness of Resilon and Gutta-Percha.
    J Endod 2006;(32)6:553-5
48.Tay F, Loushine R et al. Ultrastructural Evaluation of the Apical Seal in Roots Filled with a Polycaprolactone-Based
    Root Canal Filling Material. J Endod 2005;(31)7:514-19
49.Kapalas A, Lambrianidis T. Factors associated with root canal ledging during instrumentation.
    Endod Dent Traumatol 2000;16:220–231
50.Souza, RA. Clinical and radiographic evaluation of the relation between the apical limit of root canal filling and
    success in Endodontics. Part 1 Braz Endod J 1998;3:43-48
51.AL-Omari MAO, Dummer PM. Canal blockage and debris extrusion with eight preparation techniques.
    J Endod 1995;21:154-158
52.McKendry DJ. Comparison of balanced forces, endosonic, and step-back filing instrumentation techniques:
    quantification of extruded apical debris. J Endod Jan 1990;16(1):24-7
53.Mullaney TP. Instrumentation of finely curved canals. Dent Clin North Am 1979;23:575 92
54.Morgan LF, Montgomery S. An evaluation of the crown-down pressureless technique. J Endod 1984;10:491 8
55.M. Al-Omari, P. Dummer. Canal blockage and debris extrusion with eight preparation techniques.
    J Endod 2006;21(3):154-158
56.P. Hankins, M. ElDeeb/ An evaluation of the canal master, balanced-force, and step-back techniques.
    J Endod 1996;22(3):123-130
57.Siqueira J, Araújo M, Garcia P, Fraga R, Dantas C. Histological evaluation of the effectiveness of five
    instrumentation techniques for cleaning the apical third of root canals. J Endod 1997;23(8): 499-502
58.Serota KS et al. Predictable endodontic success:  The apical control zone. Dentistry Today May 2003;(22)5:90-7
59.Peters OA, Peters C, et al. ProTaper rotary root canal preparation: effects of canal anatomy on final shape
    analysed by micro CT. Int Endo J February 2003;(36)2:86-92
60.Becker W. Immediate implant placement: Diagnosis, treatment planning and treatment steps for successful outcomes.
    J Calif Dent Assoc 2002;33:303-310
Home page

Bone regeneration

Root fracture

Filing buccals

Apical periodontitis

Off angle xray



Lower Bi

5 canals

Sinus tract #13

Perio endo lesion


Calculus formation

Antibiotics in periodontitis

POE for MB2

Balloon sinus elevation

Confluent MB system

Lasers in endo

Endo cases


Molar case # 17

Dark color dentin

Gum pain

Ortho reabsorption

Strange anatomy

Tooth abscess

Dens case Tx options

Deep bifurcation

Buildups in RCT

Smoking /dental health

Immediate implant

Fractured US tip

Silver cone removal

Dental trauma

Post and core

Apico # 19

Irreversible pulpitis

MB, DB and P

Extra anatomy