Dental India Newsletter dated 30th March 2008

Dental India celeberated 11th year of online in Feb 2008 ! Dental India newsletter dated 02 March 2008 : Dental India newsletter dated 09 March 2008 Dental India newsletter dated 16 March 2008 : Dental India update dated 19 March 2008 Dental India newsletter dated 23 March 2008 New Dental products : New Dental Lab products / Infection control products Curmudgeon Chronicles: Case : Syndrome : Bombed molar : Middle mesial : apexification : Bio race cases : Draining canal : Duralay post technique : Missing MB2 : Restorable? 3 distant distals : Draining sinus tract : Saving the lost : Importance of recall : maxillary molar #14 FREE - Dental Videos I just completed a course with Nobel guide and purchased the software. I have not placed an implant with this guided system. - Gary Henkel, Roots Two strange ones from yesterday - Guy (courtesy:ROOTS 12th March 2008) A preface to Mr. Office Magic. This case was done start to finish under a rubber dam other than anesthesia. It becomes very irritating for someone to throw me under a bus involving me in his issue and use me as an example incorrectly and without my permission. I don�t post much on Roots because I generally do not draw a response. This was sort of an interesting case. Long term patient. Hot pulp on 30 and a nonvital 31. We decided to do them both at the same time. This one was confusing to begin with because radiographs did not read with EAL on distal of 30. It appeared to me that the distal root of 30 took a distal turn at the apex but EAL was adamant that the POE was where it is. Other than that this one was fairly easy four canals with distal merging mid root. Getting patent on 31 was a bear. I realized fairly quickly that it actually had only one POE and that all three canals exited together. That could have been the root of patency issue. Finally got patent on both mesials but for the first time ever the patient immediately felt a ding in the lip. Second time a ding on the anterior teeth. Never had that happen but it was pretty indicative of invasion of the mandibular canal with a 15 file. I stepped back and finished the apex to a 45 about a mm shy and didn�t got out the apex again. I like a puff but avoided one like a plague here. I�ve marked some stuff on the radiographs�apparent bend on distal root of 31 and a strange shape of root on 31. Of course in the past forty years I�ve held enough of these in my hand to know that root shape does not always indicate canal location. Mark, used sequence of ProTapers I mentioned before�SX, S2, F2 ProFiles 40-45. Obturation with System A using Epiphany cones and self etch Epiphany sealer. Personally I like the primer better but didn�t want to chance any loose primer getting out small patency into the canal. Inverted shot is just because it is something I like to look at. - Guy W. Moorman, Jr. DDS Cigarette smoking and its orthopedic consequences. 1: Am J Orthop. 1996 Sep;25(9):590-7. Links Cigarette smoking and its orthopedic consequences. Kwiatkowski TC, Hanley EN, Ramp WK. Department of Orthopaedic Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA. Cigarette smoking and its ramifications are coming under increasing scrutiny in the field of orthopedic surgery. Smoking has been implicated in impeding bone metabolism and fracture repair, and increasing the rate of postoperative infection and the incidence of nonunion. This article reviews the current body of knowledge on these topics, as well as the potential adverse effects of smoking on wound healing and microsurgical procedures. An in- depth discussion on the pathophysiologic mechanisms of nicotine is also included. PMID: 8886197 [PubMed - indexed for MEDLINE] Interaction between Sodium Hypochlorite and Chlorhexidine Gluconate Bettina R. Basrani , DDS? , Sheela Manek, BSc , Rana N.S. Sodhi, PhD, Edward Fillery, BSc, PhD, Aldo Manzur, DDS, MSc published online 21 May 2007. Abstract The combination of sodium hypochlorite (NaOCl) and chlorhexidine (CHX) results in the formation of a precipitate. The aim of this study was to determine the minimum concentration of NaOCl required to form a precipitate with 2.0% CHX. This was accomplished with a serial dilution technique. X-ray photon spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (TOF-SIMS) were used to qualify and quantify the precipitate. A color change and precipitate were induced in 2.0% CHX by 0.023 % and 0.19 % NaOCl, respectively. Both XPS and TOF-SIMS showed the presence of para-chloroaniline in an amount directly related to the concentration of NaOCl used. Until this precipitate is studied further, its formation should be avoided by removing the NaOCl before placing CHX into the canal.

FREE - Dental Videos

I just completed a course with Nobel guide and purchased the software. I have not placed an implant with this guided system. - Gary Henkel, Roots

Two strange ones from yesterday - Guy (courtesy:ROOTS 12th March 2008)

A preface to Mr. Office Magic. This case was done start to finish under a rubber dam other than anesthesia. It becomes very irritating for someone to throw me under a bus involving me in his issue and use me as an example incorrectly and without my permission. I don�t post much on Roots because I generally do not draw a response. This was sort of an interesting case.

Long term patient. Hot pulp on 30 and a nonvital 31. We decided to do them both at the same time. This one was confusing to begin with because radiographs did not read with EAL on distal of 30. It appeared to me that the distal root of 30 took a distal turn at the apex but EAL was adamant that the POE was where it is. Other than that this one was fairly easy four canals with distal merging mid root.

Getting patent on 31 was a bear. I realized fairly quickly that it actually had only one POE and that all three canals exited together. That could have been the root of patency issue. Finally got patent on both mesials but for the first time ever the patient immediately felt a ding in the lip. Second time a ding on the anterior teeth. Never had that happen but it was pretty indicative of invasion of the mandibular canal with a 15 file. I stepped back and finished the apex to a 45 about a mm shy and didn�t got out the apex again. I like a puff but avoided one like a plague here.

I�ve marked some stuff on the radiographs�apparent bend on distal root of 31 and a strange shape of root on 31. Of course in the past forty years I�ve held enough of these in my hand to know that root shape does not always indicate canal location. Mark, used sequence of ProTapers I mentioned before�SX, S2, F2 ProFiles 40-45. Obturation with System A using Epiphany cones and self etch Epiphany sealer. Personally I like the primer better but didn�t want to chance any loose primer getting out small patency into the canal. Inverted shot is just because it is something I like to look at. - Guy W. Moorman, Jr. DDS

Cigarette smoking and its orthopedic consequences.
1: Am J Orthop. 1996 Sep;25(9):590-7. Links
Cigarette smoking and its orthopedic consequences.
Kwiatkowski TC, Hanley EN, Ramp WK.
Department of Orthopaedic Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA.

Cigarette smoking and its ramifications are coming under increasing scrutiny in the field of orthopedic surgery.
Smoking has been implicated in impeding bone metabolism and fracture repair, and increasing the rate of
postoperative infection and the incidence of nonunion. This article reviews the current body of knowledge on these
topics, as well as the potential adverse effects of smoking on wound healing and microsurgical procedures. An in-
depth discussion on the pathophysiologic mechanisms of nicotine is also included.

PMID: 8886197 [PubMed - indexed for MEDLINE]

Interaction between Sodium Hypochlorite and Chlorhexidine Gluconate

Bettina R. Basrani , DDS? , Sheela Manek, BSc , Rana N.S. Sodhi, PhD, Edward Fillery, BSc, PhD, Aldo Manzur, DDS,
MSc
published online 21 May 2007.

Abstract
The combination of sodium hypochlorite (NaOCl) and chlorhexidine (CHX) results in the formation of a precipitate.
The aim of this study was to determine the minimum concentration of NaOCl required to form a precipitate with 2.0%
CHX. This was accomplished with a serial dilution technique. X-ray photon spectroscopy (XPS) and time-of-flight
secondary ion mass spectrometry (TOF-SIMS) were used to qualify and quantify the precipitate. A color change and
precipitate were induced in 2.0% CHX by 0.023 % and 0.19 % NaOCl, respectively. Both XPS and TOF-SIMS showed the
presence of para-chloroaniline in an amount directly related to the concentration of NaOCl used. Until this
precipitate is studied further, its formation should be avoided by removing the NaOCl before placing CHX into the
canal.