Winners of the 2021 Dennis Shinbori, DDS, Table Clinic Competition

Dental students Eugenie Choi, Christopher Chaffin and Joraldine Feliciano received first place in the dental student category. Their research evaluated intraoral scanners.

Dental students, dental assistant students and military/residents from across the state competed virtually in the California Dental Association’s annual Table Clinic Competition, now named in honor of the late Dennis Shinbori, DDS, at CDA Presents in May. Judges conducted Q&A sessions via Zoom with the top 17 applicants for the second round and winners were announced during a live awards presentation May 16. The Journal is pleased to publish abstracts from the first-place winners in each category.

Dental Student Winners

Ability of Intraoral Scanners To Capture Crown Finish Line at Various Depths

ABSTRACT: Intraoral scanners (IOSs) have increased in use in dentistry, but there is a notable absence of literature analyzing their ability to capture a distinct and accurate crown finish line. This study measured the distinctness of the finish line of an all-ceramic crown typodont tooth at 1 mm supragingival to 3 mm subgingival depths, decreasing in 1 mm increments. The tooth was inserted into five 3D printed dentoform models with a removable gingiva and scanned. Each scan was superimposed over a control scan of the tooth, sectioned at 12 points, and the distinctness of the finish line was measured by finding the radius of each sectioned exit angle. Statistical analysis found that finish line distinctness decreased as subgingival depths increased and were statistically significant below the 1 mm subgingival depth. The results of this study appear to show that IOSs cannot capture a distinct and accurate finish line below 1 mm subgingival depths.

THE CORRESPONDING AUTHOR, Eugenie Choi, can be reached at euchoi@students.llu.edu.

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Capt. Heather Baughman, DDS, DC, USAF, was the winner in the military/resident category. She researched the impact of breastfeeding on occlusion.

Military/Resident Winner

Impact of Breastfeeding on Occlusion

ABSTRACT: Functional stimuli, such as breathing, swallowing, chewing and sucking, have a major effect on craniofacial growth and development. Breastfeeding in particular involves intense muscular activity that favors proper lip closure and tongue posture and stimulates mandibular function as well as decreases the deleterious effects of sucking habits. The protective factor of breastfeeding therefore contributes to proper development of the oral cavity leading to prevention of posterior crossbite and decreased incidence of detrimental nonnutritive sucking habits.

THE AUTHOR, Capt. Heather Baughman, DDS, DC, can be reached at baughmanmh@gmail.com. She acknowledges Dr. Jacob A. Powell, Lt. Col., USAF, DC, and Dr. Matthew Stratmeyer, Lt. Col., USAF, DC.

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Dental Assisting Student Winner

Is Botox Beneficial in Dentistry?

Taya Vongphachanh, Antelope Valley High School

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Thank you to the following judges for the annual Dennis Shinbori Table Clinic Competition:

RDA Competition Patricia Acosta, RDA Maleah Brooks, RDA

Dental Students Judges Monica Bruce, DDS Pradip Patel, DDS Peter Young, DDS

Military Judges Tony Daher, DDS, MSEd Stafford Duhn, DDS Hemant Joshi, DDS Chi Leung, DDS Kenneth Yaros, DDS