Digital versus conventional implant impressions for partially edentulous arches: An evaluation of accuracy

Journal of Prosthetic Dentistry Published online: September 16, 2017

Abstract

Statement of problem

To the authors’ knowledge, while accuracy outcomes of the TRIOS scanner have been compared with conventional impressions, no available data are available regarding the accuracy of digital impressions with the Omnicam and True Definition scanners versus conventional impressions for partially edentulous arches.

Purpose

The purpose of this in vitro study was to compare the accuracy of digital implant impressions using 2 different intraoral scanners (IOSs) with that of conventional impressions for partially edentulous arches.

Material and methods

Two partially edentulous mandibular casts with 2 implant analogs with a 30-degree angulation from 2 different implant systems (Replace Select RP; Nobel Biocare and Tissue level RN; Straumann) were used as controls. Sixty digital models were made from these 2 definitive casts in 6 different groups (n=10). Splinted implant-level impression procedures followed by digitization were used to produce the first 2 groups. The next 2 groups were produced by digital impression with Omnicam. The last 2 groups were produced by digital impression with the True Definition scanner. Accuracy was evaluated by superimposing the digital files of each test group onto the digital file of the controls with inspection software.

Results

The difference in 3-dimensional (3D) deviations (median ±interquartile range) among the 3 impression groups for Nobel Biocare was statistically significant among all groups (P<.001), except for the Omnicam (20 ±4 μm) and True Definition (15 ±6 μm) groups; the median ±interquartile range for the conventional group was 39 ±18 μm. The difference in 3D deviations among the 3 impression groups for Straumann was statistically significant among all groups (P=.003), except for the conventional impression (22 ±5 μm) and True Definition (17 ±5 μm) groups; the median ±interquartile range for the Omnicam group was 26 ±15 μm. The difference in 3D deviations between the 2 implant systems was significant for the Omnicam (P=.011) and conventional (P<.001) impression techniques but not for the True Definition technique (P=.247).

Conclusions

Within the limitations of this study, both the impression technique and the implant system affected accuracy. The True Definition technique had the fewest 3D deviations compared with the other 2 techniques; however, the accuracy of all impression techniques was within clinically acceptable levels, and not all differences were statistically significant.

3M, Patterson Dental Open Doors to Digital Dentistry

ST. PAUL‚ Minn. – (Sept. 14, 2017) – 3M Oral Care and Patterson Dental have signed a distribution agreement for 3M’s True Definition Scanner. The agreement brings Patterson’s customers the opportunity to explore digital dentistry via an open platform and a trusted partner. With the 3MTM True Definition Scanner, oral care professionals are choosing a digital hub that gives them an unrestricted entry point into traditional crown & bridge work with any lab, advanced implant solutions, clear aligners, in-office milling and more.
“Distributors have enjoyed putting the True Definition Scanner in front of dentists, because they know we’re standing behind it,” said Jim Ingebrand, vice president, Oral Care Solutions Division of 3M. “They can be confident that 3M is committed to ensuring it’s a success for the practice.”
The True Definition Scanner features the smallest wand on the market which means scanning with this system is not only comfortable for clinician and patient alike, it also delivers precision clinicians can trust. With a low-price entry into digital impressioning at just $16,995, the mobile scanner fits the size, mobility, practice requirements and budget needs of practitioners. The True Definition Scanner’s open architecture allows connection to the most common digital dentistry file formats. This gives dental practices the flexibility to choose the best output option for each case – helping manage the workflow the way the clinician wants it. 

“3M is a trusted brand and we’re excited to distribute the True Definition Scanner,” said Dave Misiak, president, Patterson Dental North America. “We have a long-standing relationship with 3M as strong Minnesota-based leaders in the dental industry and believe we now have the opportunity to serve 3M customers in new ways via our best-in-class service and support network.”
The True Definition Scanner is now available through Patterson Dental in the U.S. 

Visit 3M.com/TrueDef for more information about 3M’s True Definition Scanner or call 1-800-634-2249 to schedule an in-office demonstration.
3M Oral Care promotes lifelong oral wellness through inventive solutions that help oral care professionals achieve greater clinical, professional and personal success. Learn more at 3M.com/oralcare 

About 3M
At 3M, we apply science in collaborative ways to improve lives daily. With $32 billion in sales, our 90,000 employees connect with customers all around the world. Learn more about 3M’s creative solutions to the world’s problems at www.3M.com or on Twitter @3M or @3MNewsroom.

Day two of Dentsply Sirona World: Better than Imagined

Grammy-winning band Imagine Dragons concluded the second day of the Ultimate Dental Meeting with a show-stopping concert after an eventful day of educational courses and extracurricular activities 

LAS VEGAS, N.V. (Sept. 16, 2017) – Day two of Dentsply Sirona World was chockfull of top-notch educational content and speakers, exhilarating activities and outstanding entertainment for the thousands of event attendees.
BeachbodyTM Super Trainer Joel Freeman kicked the morning into gear for hundreds of guests with his MMA-styled workout session, which was sponsored by ClearCorrect. The energizing workout was followed by a special meet and greet on the trade show floor. Freeman’s workout was designed to suit attendees of all ages and comfort levels, making this event the perfect start to day two of the Ultimate Dental Meeting.
Commencing the day’s educational sessions, General Session with Dr. Frank Spear and Dr. Gregg Kinzer began at 9 AM. Both presenters discussed the age of digital dentistry, the best means to better your performance and practice, and shared advice on how to obtain the best clinical outcomes with some of the best products and technologies on the market. Doors opened to the comprehensive trade show floor after the conclusion of Drs. Spears’ and Kinzer’s presentation.
After exploring the trade show, attendees took their seats to hear from award-winning author and TED Talk legend Simon Sinek during the day’s second General Session. Sinek, the pioneer of ‘leading with why’, spoke on different leadership styles and how to better encourage employees through trust and empowerment.
Various Breakout Sessions scheduled throughout the remainder of the day provided exceptional content to attendees eager to absorb the quality education presented before heading to the evening reception, and then to the highly-anticipated private concert by Imagine Dragons.
Before the Grammy-winning band rushed the stage, attendees flooded into the Venetian Ballroom elated to experience what was undoubtedly a highlight of the three-day extravaganza. Imagine Dragons slayed with their electrifying performance, which included chart-topping hits Radioactive, Thunder, On Top of the World and Believer. This exclusive concert was sponsored by Fortune Management.

Day three of Dentsply Sirona World promises to deliver extraordinary education in conjunction with spectacular activities and entertainment as the second annual Ultimate Dental Meeting draws to a close.
Stay up to date on daily activities, course schedules and more with the Dentsply Sirona World app, available for iOS and Android devices.
The sold-out Dentsply Sirona World is located at The Venetian and The Palazzo in Las Vegas and spans from Thursday, Sept. 14 to Saturday, Sept. 16. To learn more about this event and next year’s event, Dentsply Sirona World 2018, visit www.dentsplysiroanworld.com.

Opening day of Dentsply Sirona World exceeded expectations

After much anticipation, the first day of the second annual Ultimate Dental Meeting concluded with high praise 

Las Vegas, N.V. (Sept. 15, 2017) – After months of anticipation, Dentsply Sirona World 2017 has officially begun! This three-day event is the industry’s only educational festival, and those in attendance have now experienced the Dentsply Sirona difference.
The day started with the magnificent Opening General Session. With a ballroom submerged in darkness, LED light dancers wowed the audience with incredible illusions and captivating choreography. Immediately following, Group Senior Vice President of the U.S. Commercial Organization Michael Augins welcomed scores of people to one of the largest gatherings in dentistry. More than 7,000 people joined Dentsply Sirona in Las Vegas for this spectacular event; a record-breaking number for the company.
Throughout Opening General Session, industry titans Dr. Joshua Austin, Dr. Erin Elliot, Dr. Sarah Jockin and Dr. Cliff Ruddle offered a taste of what attendees could expect throughout this experience. New to General Session this year, Dr. Neal Patel performed lived surgery from the trade show floor just feet away while the audience watched via live stream.
At the close of Opening General Session, the vast trade show floor opened and eventgoers ventured the aisles, exploring the latest and greatest in dental technologies, products and services. In addition to top-notch exhibitors, the popular media panel was located on the trade show floor, allowing attendees to hear from some of the industry’s best.
The first group of Breakout Sessions opened for attendees in the early afternoon following lunch and the opening of the trade show. Sessions within 11 educational tracks were available throughout the afternoon into the early evening. Per tradition, attendees designed their schedules as desired and select the courses in which they were interested. Some chose to stick with one track while others selected courses within multiple tracks for a more comprehensive experience.
The second General Session, sponsored by Implant Seminars, featured Academy Award-nominated actor, producer and philanthropist Will Smith. Smith entered the stage ‘gettin’ jiggy wit it’ to a ballroom roaring with applause. One of the most popular celebrities of this generation discussed his climb to fame, and the successes and failures that steered the trajectory of his career.

As Smith reflected on an event in his childhood in which his father directed him to build a wall, Smith shared an inspiring metaphor on career growth: “Building a wall can be daunting, but if you focus on laying one perfect brick each day, the bricks eventually form a wall.”
Sponsored by Dental Product Shopper, the Welcome Reception- a wonderful opportunity for guests to network and socialize with peers- followed Smith’s session. Food and beverage were provided for guests as they geared up for the evening’s comedic entertainment.
Laughter permeated the ballroom as Jeff Dunham, a Forbes-listed comedian, performed his live standup for audiences later that evening. Dunham had his sidekicks in tow and re-energized the room after a full first day of Dentsply Sirona World. Dunham’s performance was sponsored by OperaDDS and included fan-favorite characters Walter, Bubba J, Peanut and Achmed, but not before he shared hilarious pictures from his past. Walter and Dunham’s satirical banter about dental professionals and the Ultimate Dental Meeting was perfectly tailored to fit the audience. Dunham’s performance concluded the first day of Dentsply Sirona World.
As the second day is upon us, attendees can expect more entertainment and even more quality education as this dental festival continues.
Stay up to date on daily activities, course schedules and more with the Dentsply Sirona World app, available for iOS and Android devices.
The sold-out Dentsply Sirona World is located at The Venetian and The Palazzo in Las Vegas and spans from Thursday, Sept. 14 to Saturday, Sept. 16. To learn more about this event and next year’s event, Dentsply Sirona World 2018, visit www.dentsplysiroanworld.com. 

Narrow implants (2.75 and 3.25 mm diameter) supporting a fixed splinted prostheses in posterior regions of mandible: one-year results from a prospective cohort study

International Journal of Implant Dentistry20173:43

https://doi.org/10.1186/s40729-017-0102-6

©  The Author(s). 2017

Received: 23 March 2017

Accepted: 29 August 2017

Published: 8 September 2017

Abstract

Background

Can multiple splinted narrow-diameter implants be used as definitive implants in patients with insufficient bone ridge thickness in posterior regions of the mandible? With this aim, we evaluated their outcomes in this set up to 1 year after loading.

Methods

Forty-two patients with a mean age of 61.3 years old (range 49–73) in need of fixed prosthetic implant-supported rehabilitations in the posterior region of the mandible, presenting a thin alveolar crest, were selected. One hundred twenty-four narrow-diameter implants (2.75 and 3.25 mm diameter) were placed and splinted with a bridge. One implant for each missing tooth was requested to be inserted. Outcomes measured were implant survival, complications, and marginal bone level changes up to 1 year after loading.

Results

At the 12-month follow-up, three implants failed. Two 2.75 mm diameter implants and one 3.2 mm diameter implant failed. The implant survival rate was 97.6%. Peri-implant bone resorption was 0.20 mm (CI 95% 0.14: 0.26) after 6 months and 0.47 mm (CI 95% 0.29; 0.65) after 12 months of loading, not different between 2.75 and 3.25 mm diameter groups (p = 0.786). Of the 42 cases, three had an episode of peri-implant mucositis (7.1%).

Conclusions

Within the limits of this study, preliminary short-term data (1 year post-loading) suggested that narrow-diameter implants (2.75 to 3.25 mm) can be successfully used as a minimally invasive alternative to horizontal bone augmentation in the posterior mandible. However, larger and longer follow-ups of 5 years or more are needed.

Multiple external cervical root resorptions after home whitening treatment: a case report

First published: 8 September 2017Full publication history

• DOI: 10.1111/adj.12540  View/save citation

Abstract

Invasive multiple cervical root resorptions after vital tooth bleaching is a rare condition. The aim of this article is to present a case of multiple external cervical root resorptions (ECRR) after a misguided home whitening treatment. A 34 year old male patient presented with slight sensitivity and mobility in several teeth. Despite the manufacturer's recommendations, the patient used a 22% carbamide peroxide-based tooth bleaching gel at home for 4 days consecutively, at night, on the upper and lower arches. Clinical examination revealed gingival swelling, probing depths ranging 5–7 mm on the buccal and proximal surfaces, and grade 2 mobility of the teeth affected by ECRR. Radiographs revealed presence of ECRR in several teeth during initial examination, and development of multiple new lesions 6 months later. The teeth were subsequently extracted. Histological analysis showed multiple dentine lacunae and areas of dentine reparation. The careful use of these products can prevent sequelae such as those reported in this clinical case. As the vital bleaching has a variable success rate, patients should be informed through a consent form of the benefits and risks of tooth bleaching treatment.

It’s almost here- the greatly anticipated Dentsply Sirona World commences tomorrow!

Thousands of eager attendees are arriving in Las Vegas for the sold-out Ultimate Dental Meeting beginning Thursday, Sept. 14

CHARLOTTE, NC (Sept. 13, 2017) – Dentsply Sirona World is the second annual Ultimate Dental Meeting and the first to be hosted in Las Vegas. Dubbed an educational festival, this is one of the largest events in dentistry and attracts the leading minds in the industry.

“As we welcome a record-number of attendees, the excitement is palpable among them and our Dentsply Sirona team,” said Group Senior Vice President of the U.S. Commercial Organization Michael Augins. “Our organization has been looking forward to this colossal event since the conclusion of SIROWORLD in Orlando, and here in Vegas, attendees can expect the biggest, most impressive show to date.”

Dentsply Sirona World offers quality clinical and business education to every dental professional, including General Practitioners, specialists, technicians, office staff members, etc. Esteemed clinicians and business professionals will lead sessions within 11 educational tracks throughout the course of the event, providing the opportunity for registrants to absorb as much content as possible.

The entertainment at Dentsply Sirona World is just another factor separating this event from other industry meetings. The caliber of celebrity entertainment is simply unmatched. Will Smith, Jeff Dunham, Simon Sinek and Imagine Dragons are all slated to perform or speak exclusively for Ultimate Dental Meeting attendees.

In addition to the invaluable education and extraordinary entertainment, guests can enjoy various social, and health and wellness activities, including a MMA-styled workout led by Super Trainer Joel Freeman on Friday morning and the Out of This World Fun Run on Saturday morning. Evening receptions provide additional networking opportunities, and the three-day event concludes with the Evening of Espionage closing party at TAO Nightclub.

For those already onsite or arriving today, early registration is open from 3-8 p.m. Early registration is highly encouraged as General Session begins at 9 a.m. Thursday, and doors to the session close at 9 a.m. sharp.

Those who missed the opportunity to attend Dentsply Sirona World 2017 can register for Dentsply Sirona World 2018 located in Orlando, Florida, from Sept. 13-15. Register now at www.dentsplysironaworld.com to take advantage of the lowest prices available for Dentsply Sirona World 2018!

The sold-out Dentsply Sirona World is located at The Venetian and The Palazzo in Las Vegas and spans from Thursday, Sept. 14 to Saturday, Sept. 16. To learn more about this event and next year’s event, Dentsply Sirona World 2018, visit www.dentsplysironaworld.com. 

Bacteremic capacity of a minimally invasive flapless accelerated orthodontic technique

Journal of the World Federation of Orthodontists

Volume 6, Issue 3, September 2017, Pages 105–108

Abstract

Objective

The aim of present prospective cohort study was to investigate prevalence of bacteremia after a minimally invasive flapless accelerated orthodontic technique.

Material and Methods

The sample consisted of 30 orthodontic patients (18 female, 12 male; mean age: 19.57 ± 0.5 years). All patients had Class I malocclusion and had fixed orthodontic appliance treatment. The flapless technique was performed with a reinforced scalpel on the labial aspect of the mandibular incisors to separate the interproximal cortices transmucosally. Using aseptic technique, two blood samples of 20 mL were collected before and 30 to 60 seconds after the flapless technique. The blood was aseptically inoculated into culture bottles and incubated at 35°C for 2 weeks. Medium alterations showing bacterial growth were investigated by using Gram staining. The bacteria were identified by VITEK 2 (bioMérieux, Marcy l'Etoile, France) automated microbiology identification system. The result was analyzed statistically using the McNemar test, with P < 0.05 indicating statistical significance. The intensity of bacteremia was expressed as colony-forming units per milliliter.

Results

No significant difference between the preoperative and postoperative samples were determined with respect to bacteremia (P = 0.335). Only Streptococcus oralis was detected in two postoperative samples.

Conclusion

A minimally invasive flapless accelerated orthodontic technique is not related to transitory bacteremia, as Streptococcus oralis was detected in only two postoperative samples.