Department News & Events


December 5, 2015

Operative Winter Holiday Party

operative annual winter party

Dr. Denehy and Jan hosted the annual Departmental Winter Party at their home. The traditional gift exchange was done before the Hawkeye Big Ten championship final and during the game an amazing dinner was served. THANKS everybody for coming.

operative happy holidays 2015


December 4, 2015

Operative Alumnus and the Ettingers in Thailand

alumnus and ettingers in thailand


November 30, 2015

Former Operative Adjunct becomes Dean

ryder, former operative adjunct becomes dean


November 13, 2015

International College of Dentists meeting 2015

2015 international college of dentists meeting

Dr. Natalia Restrepo-Kennedy was inducted into the International College of Dentists during the recent American Dental Association meeting, which was held in Washington, D.C.


October 14, 2015

Academy of Dental Materials meeting 2015

lahaina maui hi

Dr. Steve Armstrong attended the Academy of Dental Materials meeting in Lahaina, Maui, Hawaii from October 7-10, 2015. He serves as Member-At-Large to the Academy Board through 2017. The meeting themes were (1) Emerging Materials and Declining Dogma and (2) Additive materials and layered structures.  Professor Isabelle Denry (Pros/Dows) was an invited lecturer and presented her work with Calcium Phosphate-based Scaffolds for which she has received a recent patent. Upcoming meetings include Chicago in 2016 and Nuremberg, Germany in 2017.


October 07, 2015

Dr. Tracy de Peralta presented in the noon seminar series

2019 class

The Department of Operative Dentistry hosted the visit for Dr. Tracy de Peralta, Associate Professor and Director of Curriculum and Assessment Integration at the University of Michigan School of Dentistry. Dr. de Peralta shared her expertise on “Multisource Assessment for Better Reflective Practice” during the Noon seminar on October 7th, which was well attended and ended with a lively discussion on assessment strategies to promote reflective thinking and reflective learning.

Dr. de Peralta together with Dr. Kwon introduced the peer assessment of waxing projects into the freshmen dental anatomy course and expanded the multisource assessment to include: self-evaluation, peer-evaluation, digital evaluation and faculty evaluation which is a unique approach at the University of Iowa College of Dentistry.

At the end of her two-day visit at the College of Dentistry, Dr. de Peralta genuinely expressed her gratitude for the great Iowan hospitality!


October 03, 2015

Dr. Justine Kolker represents the College of Dentistry on the UIOWA Faculty Senate and Faculty Council


dr justine kolker on ui faculty senate & council


September 20, 2015

Operative Fall Picnic

2015 operative fall picnic

The Operative Annual Fall Family Picnic was held at the Weeber Pavilion in rural Iowa City on Steve & Jan Weeber’s farm. It has been a great time to celebrate Fall with old and new Operative family members.


September 19, 2015

Weekends Bike Ride

operative week-end bike ride

Dr. Denehy has organized bike rides in different locations with the Graduate students. They really enjoy the opportunity to "relax" and explore the beautiful landscapes around Iowa City.


September 12, 2015

Iowa Mission of Mercy (IMOM) in Council Bluffs

2015 IMOM

2015 IMOM thank you

The Iowa Mission of Mercy (IMOM) is a large scale, two-day oral health clinic where dental professionals and other volunteers donate their time to assist individuals and families who face barriers to receiving oral health care. This year IMOM was held in Council Bluffs and the Operative Dentistry Department was well represented by Faculty, Residents and Staff.


September 08, 2015

Operative Dentistry Ribbon cutting ceremony 

operative ribbon cutting

The Operative Dentistry Department moved back to the second floor (August 24th) and held the ribbon cutting ceremony to commemorate the new area including faculty offices, pre-doctoral clinics (D2 and D3), residents' office and clinic, Biomaterial Laboratory and faculty & student labs.


August 30, 2015

Pontoon boat ride on Lake MacBride

operative team at lake macbride

Dr. Denehy, Tracy D'Antonio and Michelle Zubcic organized a pontoon ride on lake Macbride. It was a great adventure and lots of fun.


August 22, 2015

Courage Ride

2015 courage ride

dr. denehy 2015 courage ride

The Courage Ride is an annual bike ride through rural Iowa. The ride is dedicated to improving the lives of those affected by sarcoma.


August 21, 2015

Operative Dentistry annual teaching in-service 

Operative’s annual teaching in-service and orientation at the College of Dentistry & Dental Clinics. The agenda was very productive and had a massive attendance of faculty and residents.

operative department in-service orientation

Lunch was served at Monica's Restaurant.


August 17, 2015

Annual All-College Conference

The annual All-College Conference was held August 17th in the newly remodeled Galagan auditorium.  Service milestones were recognized between 5 and 45 years, and Dr. Justine Kolker was honored for 10 years in Operative. 
Dr. Armstrong updated the college on faculty and staff changes within the department. Dr. Debb Cobb has retired and Drs. Sandra Guzman-Armstrong, Rodrigo Maia are new co-directors of the Operative Resident Program.  Mary Yoder has retired and Michelle Zubcic is the new Primary Administrative Support Staff.  Diane Ryerson and Lynn Fritz are now the front desk clerks.
Dr. Guzman introduced the three new residents:  Dr. Hamad Algamaiah from Saudi Arabia, Dr. Thomas Grubbs from the Navy (stationed in California) and Tamer Theodory from Jordan.
Dr. So Ran Kwon received the Teacher of the Year award from the class of 2018 for her work in first year dental courses.  Cindy Wiedenhoff received a Special Recognition award from the graduating class of 2015.

July 14, 2015

Dr. Rodrigo Rocha Maia has received two grants from the American Dental Education Association (ADEA)

A $4,100 ADEA grant will support his research project, "Comparison of Light Propagation in Dental Tissue and Resin-Based Composite by Lasers." The use of laser (He-Ne) in three different wavelengths (red, green and blue) will be used to evaluated the light propagation (absorption, transmittance, attenuation coefficient, scattering and back scattering) in enamel dentin and dentino-enamel junction (DEJ) and to compare the difference among three incremental build-up techniques  using a nano-filled resin based composite. Dr. Maia is principal investigator. Dr. Hanan Adel Elgendy, an operative dentistry resident, is co-investigator.

A $3,300 ADEA grant will support Dr. Maia's research on "Esthetic Blending: Visual vs. Spectrophotometer Data Analysis for Different Bevels in Class 4 RBC's Direct Restorations.". The goal of this research will be to determine what type of bevel to use on class IV build ups. Dr. Maia is principal investigator. Dr. Tracy D'Antonio, an operative dentistry resident, is co-investigator.

molar slab

Sound human molar slab (1.5 mm thickness) irradiated with a He-Ne blue laser (wavelength: 405 nm) used to evaluate the light propagation.


June 15, 2015

New little HAWKEYE!

elena oliveira

Dr. Deise Oliveira (Operative Dentistry Alumni) gave birth to a baby girl - Elena Cruz Oliveira on June 4th.


June 7, 2015

Horse Riding

operative horse ride

operative picnic

Dr. Rawa A. Alammari (PhD candidate) organized a horse riding at Cedar Valley Stables - IA and Dr. Cobb and Mary Yoder arranged a picnic after the ride.


June 4, 2015

Omicron Kappa Upsilon Annual Banquet

annual banquet

operative annual banquet

Dr Denehy and Dr Khera were recognized for Lifetime Membership in Omicron Kappa Upsilon at the Annual Banquet. The awards banquet was held for members, family and friends.


May 29, 2015

Hansen Football Performance Center Visit  

The retired faculty dental group visit the Hansen Football  Performance Center which is the very new and very beautiful football practice facility. Bill Windauer organized the tour instead of the normal coffee meeting time.

hawkeye football facility visit

retired faculty visit football facility

From left to right - Benny Hawkins, Jimmy Pinkham, John Casko, Jim Fuller, Jim Downs, Murray Bouschlicher, Brian Clemons, Bill Windauer, Gerald Denehy, Art Nowak, Rick Walton and Ed McGrevey.


May 21, 2015

Operative Dentistry Awards Banquet

operative awards banquet

operative award winners

The Operative Dentistry annual Spring Banquet was held on May 21st the Elks Country Clu in Iowa City. Staff and faculty were recognized for service to the department. Operative residents were introduced and several awards from Operative Dentistry were given to pre-doctoral students for outstanding achievement and character.


May 3, 2015

Iowa Dental Association Honor Table Clinic

Dr. Paula Ortega- Verdugo (Oral Science PhD Candidate) was invited to the IDA Honor Table Clinic to present her Operative master’s project title  “Eight Year Report of Stepwise Excavation Outcomes in a US Academic Setting”. Her mentors were Drs. Guzman-Armstrong, Warren, Dawson, Cobb, Blanchette, Kolker and Hernandez.


May 1, 2015

Dr. So Ran Kwon Appointed as New Associate Editor for Operative Dentistry

so ran kwonDr. So Ran Kwon has been appointed as a new associate editor for the journal Operative Dentistry. Operative Dentistry, which has subscribers worldwide, is a refereed leading professional journal devoted to operative dentistry. Papers are submitted by authors from more than 45 countries under the categories of clinical research, laboratory research, clinical techniques/case presentations, and invited papers, as well as editorials and abstracts.

Dr. Kwon is excited to work with editor, Dr. Jeffrey Platt, Indiana University School of Dentistry, and to serve and contribute to the mission of advancing the practice of operative dentistry by maintaining a a continuous high quality of the journal. Operative Dentistry is the official journal of three academies: Academy of Operative Dentistry, American Academy of Gold Foil Operators and Academy of R.V. Tucker Clubs. 



April 18, 2015

Lisbond'15 - Adhesive & Esthetic Dentistry Meeting (Lisbon-Portugal)

Lisbond meeting

Dr. Rodrigo Rocha Maia was one of the speakers for the Lisbond ’15 Adhesive & Esthetic Dentistry International Meeting, which was held April 17-18, 2015, in Lisbon, Portugal. Besides Dr. Maia, there were speakers from Portugal, Mexico, Italy, Spain, Czech Republic, and Lebanon and 400 attendees from 25 countries. Dr. Maia was a co-presenter for the talk “Adhesion: Clinical Protocols on Tooth and Ceramic.” He was also a co-presenter on two other talks: “Direct Composite Resins in Anterior Tooth – the Step-by-Step Procedures” and “The Modern Aesthetic Dentistry – Tips for the Daily Clinical Work.”


April 10, 2015

Operative Alumnus 1984

chan university of washington


March 28, 2015

Faculty/Staff Receive Awards During 2015 Frolics 

Dr. So Ran Kwon (Operative Dentistry) received the First-Year Dental Faculty of the Year Award and Dr. Maged Abdelaal (Prosthodontics resident), received the Sophomore Teacher of the Year Award; Cindy Wiedenhoff (Dental Instrument Management) received the Special Recognition Award from the senior students.

2015 Frolics awards

March 14 , 2015

ADEA annual session & exhibition and IADR 2015 (Boston-MA)

The Operative Dentistry department was well represented at the recent ADEA and IADR meetings held in Boston.

Dr. Sandra Guzman-Armstrong, Dr. So Ran Kwon, and Dr. Natalia Restrepo-Kennedy were among presenters at the ADEA meeting. IADR presentation participants included Dr. Steve Armstrong, Dr. Gerald Denehy, Dr. Justine Kolker, Dr. So Ran Kwon, Dr. Rodrigo Maia, Dr. Erica Teixeira, Dr. Mohammad AlRefeai, Patrick Brambert (D2), Tommy Crary (D3), Serena Geisinger (D2), Michael Hemming (D2), and Matthew Lam (D3)."


March 6 , 2015

1st Workshop on the Development of a US Core Curriculum for Cariology at ADEA annual session & exhibition (Boston-MA)

Approximately 70 members representing 45 Dental Schools (US and Canada) attended the workshop at the Sheraton Boston Hotel during the ADEA Annual Session on March 6th, 2015. The scope of this consensus workshop was to develop a US Core Curriculum for Cariology on the basis of national and international evidence and consensus on the current and future educational needs in the field of Cariology. The leaders of this workshop were Dr. Margherita Fontana (U. of Michigan), Dr. Sandra Guzman-Armstrong (U of Iowa) and Dr. Andrew Schenkel (NYU). Invited speakers and consultants were Dr. Nigel Pitts (King’s College, London), Dr. Andreas Schulte (University of Heidelberg) and Dr. Stefania Martignon (Universidad El Bosque Colombia & King,s College, London).

ADEA 2015

From left to right: Dr. Stefania Martignon, Dr. Nigel Pitts, Dr. Margherita Fontana, Dr. Andreas Schulte, Dr. Sandra Guzman-Armstrong (Operative Dentistry) and Dr. Andrew Schenkel.


February 26, 2015

Annual Meeting of the Academy of Operative Dentistry 2015 in Chicago (February 25 - 27th)

second year graduate students at AOD Meeting

All second year graduate students (Drs. Abdullah Alshehri, Aditi Jain and Hanan Elgendy) were selected to present table clinics at the AOD Meeting. Their presentations were outstanding and well received by attendees. Each of the graduate students was mentored by faculty in the Department. This collaborative effort characterizes the spirit and team work of the Operative Department. Also, several members (faculty and staff) attended the meeting and some of them went to the Midwinter 2015.

New AOD members from Iowa

  • Dr. Erica Teixeira
  • Dr. Hanan Elgendy
  • Dr. Amira Ahmed
  • Dr. Watcharaphong Ariykriangkai
  • Dr. Tracy D'Antonio
  • Dr. Carolina Garcia


AOD Committee members from Iowa

American Board of Operative Dentistry

  • Dr. Justine Kolker – Chair


  • Dr. Sandra Guzman-Armstrong – Officer

Constitution and Bylaws Committee

  • Dr. Rodrigo Maia - Member

2015 annual academy of operative dentistry meeting


February 11, 2015

62nd Annual Meeting of the Iowa Section of the American Association for Dental Research (AADR)

Operative Dentistry AADR

Rawa, So Ran, Serena, Maggie, Matthew, Patrick, Fang at AADR

Operative Dentistry

  1. Carolina Garcia (presenter), Fang Qian, Marcos A. Vargas (mentor)
    Effect of Lingual Bevel in the Fracture Strength of Class IV Composites
    2nd place Dentsply Implants Post-Doctoral Competition
  2. Serena Geisinger (presenter), So Ran Kwon (mentor), Fang Qian (mentor)
    Employment of Reservoirs in Trays: Efficacy and Efficiency in Tooth Whitening
  3. So Ran Kwon (presenter), Deborah V. Dawson, Philip W. Wertz
    Time-Course Penetration of Potassium Nitrate and the Effect on Whitening-Efficacy
  4. Rawa A. Alammari (presenter), So Ran Kwon (mentor)
     Minimally Invasive Management of Missing Maxillary Lateral Incisors
    1st place – ADA Post-Doctoral Table Clinic Award
  5. Michael Hemming (presenter), So Ran Kwon (mentor), Fang Qian (mentor)
    Repeatability in Color Measurements of a Spectrophotometer Using Different Positioning Devices
  6. Matthew Lam (presenter), So Ran Kwon (mentor), Fang Qian, Gerald E. Denehy (mentor)
    Evaluation of an Innovative Digital Assessment Tool in Dental Anatomy
    1st place – Proctor and Gamble Pre-Doctoral Award
  7. Tommy J. Crary (presenter), Steve Armstrong (mentor), Rodrigo Maia (mentor), Fang Qian
    PCR Machine as a Novel Thermo-cycling Method for Microtensile Specimens
  8. Patrick R. Brambert (presenter), Mary M. Hogan (mentor), Fang Qian (mentor), So Ran Kwon (mentor)
    Erosion Potential of Whitening Regimens as Evaluated with Polarized Light Microscopy
    1st place -- ADA Pre-Doctoral Poster/Table Clinic Competition
  9. Mohammad AlRefeai (presenter), Justine L. Kolker (mentor), Fang Qian, Gerald E. Denehy
    Survival Analysis of Anterior Composite Restorations at UICoD between 1995-2013
    Operative Specialty Award

  10. Tariq Ghazal (presenter), Steven M. Levy (mentor), N.K. Childers, Barbara Broffitt, Daniel J. Caplan, John J. Warren, J.E. Cavanaugh, Justine L. Kolker
    Dental Caries in School-aged African-American Children in Alabama: A Six-Year Longitudinal Study
  11. Paula Ortega-Verdugo (presenter), Sandra Guzman-Armstrong (mentor), John J. Warren (mentor), Deborah V. Dawson, Derek R. Blanchette, Deborah S. Cobb, Justine L. Kolker, Marcela M. Hernandez
    8-Year Retrospective Study of Re-entry Status of Stepwise Excavation Procedure in a US Academic Setting

 Judges from Operative Dentistry: Drs. Justine Kolker, So Ran Kwon and Sandra Guzman-Armstrong


January 10, 2015

Cross country skiing

Cross country skiing at MacBride Field Campus

Dr. Denehy organized cross country skiing at MacBride Field Campus with the Graduate students.