Accuracy of Cone-beam Computed Tomographic Image Interpretation by Endodontists and Endodontic Residents



Limited field cone-beam computed tomography (CBCT) imaging has become a modality frequently used by endodontists to evaluate the teeth and surrounding tissues of their patients. Accurate image interpretation is vital to obtain needed treatment information as well as to discern coincidental findings that could be present. The goal of this study was to determine the accuracy of CBCT volume interpretation when performed by endodontists and endodontic residents.


Eighteen deidentified limited field CBCT scans were obtained and evaluated by an oral and maxillofacial radiologist and an endodontist experienced in reading CBCT images. Their collective findings were combined as the “gold standard” of interpretation for this investigation. Using standard CBCT software, 4 practicing endodontists and 5 second-year endodontic residents evaluated each scan and recorded any notable findings and whether or not each scan warranted referral to a radiology specialist. Their interpretations were then compared with the gold standard to determine accuracy and any significant differences among the groups.


The overall accuracy was 58.3% for endodontists and 64.3% for residents. Paired t tests showed no statistically significant differences in accuracy between the 2 groups for findings in teeth or in bone, but residents were significantly better for maxillary sinus findings. Endodontists agreed with the gold standard 38.9% of the time and residents 49.8% of the time on necessity of referral. The Cohen kappa coefficient showed moderate agreement between the groups.


Endodontists and residents had similar accuracy in CBCT scan evaluation. More training and experience are warranted for both groups in order to maximize image assessment accuracy.
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Remineralization Potential of Mints Containing Bioactive Agents in Artificially Induced Root Caries

Logo Caries Research

Original Paper

Caries Res 2018;52:331-338


This study investigated the remineralization effect of experimental mint formulations containing bioactive agents (xylitol; green tea extract, GT; and amorphous calcium phosphate, ACP) in the progression of artificially induced root caries. Root caries lesions were induced by demineralization solution (pH 4.6; 96 h; 37°C). The lesions were treated with mint A, mint B, mint C, xylitol, GT, ACP, or remineralization solution (RS; negative control). Specimens were pH-cycled through treatments (5×/day; 3 min) and 6 cycles of acidic (pH 5.0; 30 min) and neutral (pH 7.0; 10 min) buffers for 8 days. Bacterial collagenase (Clostridium histolyticum) was used overnight to simulate proteolytic challenge. Caries depth and porosity as well as mineral density were estimated using fluorescence microscopy (n = 15) and microcomputed tomography (n = 6). Analysis of variance (ANOVA, α = 0.05) showed no statistically significant difference in caries depth among all groups (p = 0.172). The highest fluorescence intensity decrease was observed for GT followed by mint C, with no significant difference between them (p = 0.868). There were significant differences among GT and mints A, B, and C when compared to RS (p < 0.001). No statistically significant differences in fluorescence intensity were observed among ACP, xylitol, and RS (p > 0.05). The mineral density of the lesions in GT, mints A, B, and C, and ACP was statistically similar (p > 0.05) and significantly higher than that in RS (p < 0.05). No significant difference was observed between xylitol and RS (p = 0.728). The experimental mints showed remineralization action on artificial root caries, and GT was found to be the main active ingredient in the investigated formulations.

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Master the Art of Direct Resin Bonding at The Center for Esthetic Excellence in Downtown

The amazing duo of Dr. Buddy Mopper and Dr. Bob Marges will be presenting Catch the Composite Wave and Surf Its Potential” at the Center for Esthetic Excellence on May 10-11, 2018. Dr. Mopper is one of the pioneers of direct resin bonding who has taught thousands of clinicians how to successfully incorporate direct resin bonding into their practices. Dr. Margeas, Des Moines Iowa’s top dentist”, is coming to Chicago with his award-winning esthetic dentistry to teach with Dr. Mopper. As some of his students proclaim, Dr. Margeas rocks” and is the dentists’ dentist. Join this class and master the art of direct resin bonding with these two masters! For more information, call and REGISTER TODAY at 800-837-2321 or visit us online at
Dr. Dennis Hartlieb will be presenting CPR for Worn Dentition” at the Center for Esthetic Excellence June 7-9. Dr. Hartlieb was named by DPR as one of the five top dentists to watch. His informative lectures on the art and science of anterior and posterior direct resin techniques have been presented worldwide to great acclaim. Call now to hold your place with this incredible technician. For more information, call and REGISTER TODAY at 800-837-2321 or visit us online at
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Academy of Laser Dentistry’s Upcoming Annual Meeting Features an Abundance of Dental Team Training

Coral Springs, FL – February 19, 2018 –  The Academy of Laser Dentistry (ALD), is emphasizing a team approach to laser dentistry during ALD 2018, Dentistry’s Laser Meeting. The event is taking place from April 26-28th at the Caribe Royale in Orlando, Florida.
According to ALD’s executive director, Gail Siminovsky, “Laser dentistry delivers better patient outcomes when the entire dental team is well-trained on the many applications, specific techniques and sensible safety procedures related to this technology. That’s why in Orlando, there’s a strong focus on team training.”  Here are some examples of ALD 2018’s team-friendly program:                                                                                                                                    
·      Keynote: “Tongue Tied: A Story Not Silenced by Oral Cancer” presented by Eva Grayzel, Six Step Screening
·      Roundtable Discussion: “Straight Talk on Diode Lasers: Scientific and Practical Rationale for Clinical Dentistry” moderated by Georgios Romanos, PhD, DDS. Periodontology, Stony Brook University
“The more the dental team knows about laser technology and the business of dentistry, the better the health of your patients and practice, explains Siminovsky, “The ALD supports our valuable auxiliary team members with outstanding presenters and topics.”
·       Lecture: “What to Say to Get the Pay- Coding, Billing, Scripting,” presented by Karen S. Parker, RDH, BSDH
·       Lecture: “Laser Use During Implant Care,” presented by Heather Angers, RDH
·       Lecture: “Photobiomodulation: Applications and Results,” presented by Mary Lynn Smith, RDH, Associate in Applied Science
·       Lecture: “Non-Surgical Periodontal Treatment Planning,” presented by Mary Lynn Smith, RDH
·       Workshop: “Give ‘Em a Hand: Hygiene Hands-On,” presented by Angie Wallace, RDH and Jeanette Miranda, RDH
·       Workshop: The Team Approach to Laser Use – Lasers and the Dental Assistant, presented by Angie Wallace, RDH and Jeanette Miranda, RDH
“Today’s successful practice marketing requires the entire dental team to be practice ambassadors on social media, in the office and in the community,” says Siminovsky. “That’s why we’ve included marketing-oriented courses appropriate for the entire team.”
·       Lecture: “Growing Your Patient Base Through Effective Digital Marketing” presented by Corey Auger, Crystal Clear Digital Marketing
·       Lecture: “OMG! I Got A Bad Review. What Do I Do?” presented by Leonard Tau, DMD. PCDE
·       Lecture: “Why Your Staff is Your Most Important Asset” presented by Corey Auger, Crystal Clear Digital Marketing 
For detailed and up to date information about ALD 2018, including courses, exhibitors, social events and registration, click here.
About the Academy of Laser Dentistry
The Academy of Laser Dentistry (ALD) is the only independent and unbiased non-profit association devoted to laser dentistry and includes clinicians, academicians and researchers in all laser wavelengths. The Academy is devoted to clinical education, research, and the development of standards and guidelines for the safe and effective use of dental laser technology. ALD was founded in 1993, with the merging of the International Academy of Laser Dentistry, the North American Academy of Laser Dentistry and the American Academy of Laser Dentistry. For more information, visit
About ALD2018:
ALD’s upcoming annual meeting (ALD2018) promises to be the Academy’s biggest annual event to date. This year’s theme is “Innovation, Illumination, Imagination – Celebrating Laser Dentistry 25 Years and Beyond.” ALD2018 will take place from April 26-28th at the Caribe Royale Orlando, Florida. For more information and to register, visit
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