Our Team

Appletree Dental Office

Appletree Dental is located in Thornton, Colorado and offers all general, cosmetic and implant dentistry services. Comprehensive dental care is provided to all and patient comfort comes first.

  • Now welcoming new patients!
  • Hablamos Español, ¡Ahora Aceptando Neuvos Pacientes!
  • Mówimy po polsku – proszę pytać o Magdę
  • Deaf, hard of hearing, and use American Sign Language- Ask for Hannah

Our Mission

The trust our patients give us is a gift we appreciate and value. We strive daily to earn and keep that trust. We faithfully provide exceptional care and respect to all of our patients. Appletree Dental’s goal is to make each visit to our office a pleasant, comfortable, and comprehensive experience.

Our doctors and hygienists recommend visiting every six months for preventative care. For our patients with specialized treatment requirements, we often recommend a more frequent visit for preventative care. You can expect great communication with your doctor and hygienist – we will discuss all options available for treatment as well as discuss a written treatment plan that you can take home with you. We do our best to ensure you have as much information as possible about your insurance policy that your employer chose for you.

  • Dr. Erica A. Derby, D.D.S.

    Erica Derby

    2010-2018 Top Dentist

    Awarded Top Dentist from 2010-2108

    A critical thinker, Dr. Derby prides herself in spending time with each of her patients, thoroughly explaining upcoming procedures and recommendations while making sure to answer and explain any dental questions they have.

    Dr. Derby states, “I strive to give my patients a quick, easy, and comfortable experience.  I want to finish treating them before they even know I’ve started!”

    A Colorado native, Dr. Derby was born in Sterling and lived in the northeast corner of Colorado until her graduation from Sterling High School.

    After graduating from The University of Colorado School of Dental Medicine, Dr. Derby spent a year as a General Dental Resident at the University of Colorado Health Science Center. It was here that she was able to get extensive training in all the areas of General Dentistry, which included pediatrics, prosthodontics, oncology, emergency care and more. She took special interest in the area of oral surgery, extractions, as well as the surgical extraction of wisdom teeth.

    She currently is a member of the American Dental Association (ADA), the Colorado Dental Association (CDA), and the Metro Denver Dental Society (MDDS). She also was elected by her peers for the honor of being a Pierre Fauchard Fellow.

    Dr. Derby married her college sweetheart, and they have two beautiful daughters. In her spare time, she takes pleasure in skiing, golfing, mountain biking, cooking and reading.

    Dr. Kristin Lere, D.D.S.

    Kristin Lere, D.D.S

    2017-2018 Top Dentist

    Awarded Top Dentist 2017-2018

    Dr. Lere’s goal is to provide comprehensive treatment while delivering outstanding dentistry specific to her patient’s individual needs and concerns.

    From North Dakota, Dr. Lere moved to Colorado to attend The University of Colorado School of Dental Medicine, which hosts strong clinical programs that emphasize research supported dental techniques.

    Following graduation from The University of Colorado School of Dental Medicine, Dr. Lere completed a post doctoral residency program at The Audie Murphy Veteran Affairs Advanced Education, located in San Antonio, Texas; there she received advanced training in IV sedation, implant dentistry, and complex case management.

    After practicing in Texas for several years Dr. Lere returned to beautiful Colorado.

    She enjoys running, biking, knitting and spending time with her family and friends, especially her husband, her two precious baby boys, and her dogs. Dr. Lere is a member of the American Dental Association (ADA), the Colorado Dental Association (CDA), and the Metro Denver Dental Society (MDDS).

    Dr. Krista Moore, D.D.S.

    Dr. Krista MooreDr. Krista Moore is committed to providing the best dental care possible and believes in treating all people with kindness, compassion, and respect. She loves being a dentist because she is able to blend together her love of science, medicine, and art.

    Dr. Moore grew up near Boulder, Colorado and attended the University of Colorado at Boulder for her undergraduate studies in integrative Physiology, where she completed her degree with honors. She then attended the University of Colorado School of Dental Medicine for her Doctorate of Dental Surgery. Dr. Moore was very involved in the dental community throughout her schooling and helped to head her school’s chapters of the American Student Dental Association and the American Association for Public Health Dentistry. She also became involved with the Colorado Dental Association (CDA) and the Metro Denver Dental Society (MDDS) as a student, and received an award for the MDDS Student of the Year during her last year of dental school.

    Dr. Moore is an active member of the American dental Association (ADA), the CDA, and MDDS, where she serves on the Membership Committee. She is passionate about giving back to her community, especially in providing dental care to children in need. She volunteers with Kids in Need of Dentistry (KIND) and the Colorado Mission of Mercy.

    Dr. Moore is married to Kevin, who was one of her dental school classmates, and they have a very fluffy cat named Smokey. In her free time, Dr. Moore enjoys knitting, reading, gardening, and being outdoors in the Colorado mountains!

    Dr. Sakib Vahora – Endodontist

    Dr Sakib VahoraDr. Sakib Vahora is a native of San Jose, California. He attended the University of California, Davis where he graduated with honors, receiving his Bachelors of Science in Psychology. Following undergrad, Dr. Vahora received his D.D.S. at the University of California, Los Angeles. After graduation, Dr. Vahora relocated out of California and completed a General Practice Residency at Montefiore Medical Center in the Bronx, NY. Moving further down the east coast, Dr. Vahora relocated to Fort Lauderdale, Florida where he received his specialty certificate in Endodontics from Nova Southeastern University. During his residency, he received the Seymour Oliet Endodontic Award for the top resident in his class.

    Dr. Vahora is an avid Bay Area sports fan, while his favorite sport is soccer. In his free time, he enjoys traveling, watching movies and binging the newest TV shows. He’s looking forward to being in Denver for all the hiking, skiing, and other outdoor activities that’s going to be available in his backyard.

    Dr. Ahmed B. Salman – Endodontist

    Dr. Ahmed SalmanDr. Salman was born and raised in Baghdad, Iraq. His initial dental training was at the University of Baghdad where he received a Bachelor of Dental Surgery (B.D.S). Afterwards, He completed a one-year general practice residency at Cairo University Hospital in Egypt.

    After a couple of years practicing as a general dentist, he decided to continue his educational journey in the United States where he obtained a second dental degree (D.D.S) from the University of Colorado School of Dental Medicine. During his time at the dental school, he was recognized for his passion and received an award for Excellence in Endodontics.

    After practicing in the Denver metro area as a general dentist his passion towards Endodontics lead him to pursue a postgraduate training at the University of the Pacific Dugoni School of Dentistry in San Francisco, CA. He received a certificate of specialty in Endodontics and a Master of Science in Dentistry (M.S.D). During his residency, Dr. Salman received the postgraduate OKU clinical excellence day award for his 1st place clinical presentation.

    Dr. Salman is Board Eligible with the American Board of Endodontics. He is an active member of the American Dental Association, the American Association of Endodontists, the Colorado Dental Association and the Metropolitan Denver Dental Society.

    During his free time, Dr. Salman plays soccer on weekly basis and enjoys traveling and spending time with his family.

    Dr. Chelsea Twohig – Periodontist

    Dr. Chelsea TwohigDr. Twohig was born and raised in small-town Wisconsin.  She attended the University of Wisconsin-Madison, graduating with a Bachelor of Science in Biology and Spanish.  Rather than immediately entering dental school, Dr. Twohig pursued her passion for Spanish language and culture, spending two years in northern Spain as an English language assistant in high school classrooms.  It was during those two years that Dr. Twohig began to play ultimate Frisbee, which has become the pastime that dominates her free time to this day.

    Although Dr. Twohig fell in love with Spain, she felt it time to return to the US and begin the next phase of her academic and professional life, and so she enrolled in the University of Iowa College of Dentistry.  Prior to her periodontal residency program, in the interest of developing her ability to practice dentistry in Spanish, Dr. Twohig completed a two year advanced education in general dentistry residency at the University of Puerto Rico School of Dental Medicine.  She then completed her periodontal residency at Oregon Health and Science University.  Dr. Twohig enjoys all aspects of her work, but specifically enjoys forming relationships with her patients and colleagues.

    She and her husband, Derek, recently moved to Colorado as Derek accepted a position at the University of Northern Colorado.  Together they enjoy traveling, snowboarding, and ultimate Frisbee.

    Nicole – Hygienist

    NicoleNicole is a Colorado native.  She graduated from CCD’s dental hygiene program and also has a degree in Psychology from CU. As a hygienist she enjoys getting to know her patients and passionate about providing the best standard of care by educating them on their personal dental needs. She believes each patients needs are different and unique to maintaining good dental health.  Outside the office she enjoys spending time with her husband, family, and dogs.  She enjoys the Colorado adventures of being outdoors in the summer, and snowboarding in the winters.

    Alisha – Hygienist

    AlishaAlisha has been providing care as a dental hygienist at Appletree since 2007. Her goal with each patient is to educate, motivate and to promote optimum oral health. She is a busy mom of three and enjoys spending time outdoors camping, riding ATVs and gardening.

    Hannah – Hygienist

    HannahHannah is a 2005 Graduate from University of Colorado Health Science Center with bachelors in dental hygiene. She’s been with Appletree since 2007 and absolutely LOVES this office. Hannah is a native of Colorado and literally grew up down the street!  As a hygienist, she thoroughly enjoys getting to know my patients and strive to make everyone feel comfortable and cared for. Her motto is: Do unto others as you would have them do unto you! She use American Sign Language and can interpret for our deaf patients.  When Hannah’s not in the office you can find her in her kitchen whipping up tasty meals for her husband and 3 kids.

  • Dr. Carrie W. Mauterer, D.D.S.

    Carrie Mauterer, DDS

    2011-2018 Top Dentist

    Awarded Top Dentist from 2011-2108

    A self proclaimed “enamel hugger”, Dr. Carrie is honored to help her patients attain a high level of health, beauty and well-being. She states, “My goal for all of my patients is to help them understand all of their options. I talk with every one of my patients about their health, their needs, their busy lives and their financial concerns and we find solutions together that suit each individual patient”.

    If you hear singing, it is no doubt Dr. Carrie serenading the children who grace her chair. It not only calms our kiddos but in many cases you will hear the children humming along as they are coached through their appointments. Her repertoire ranges from Sesame Street songs to Star Wars’s Imperial March depending on the song requests of her patient.

    Born in Evanston, Illinois, Dr. Carrie lived North of Chicago throughout her youth.

    During her studies at the University of Colorado School of Dental Medicine, Dr. Mauterer was heavily involved in many leadership positions including class president for two years and president of her school’s American Student Dental Association chapter.

    Dr. Carrie is a prominent figure in the Colorado dental community and is an advocate for building a strong healthcare community. She was honored to be awarded fellowships in both the Pierre Fauchard Society and the International College of Dentists. For four years she served the local Metropolitan Denver Dental Society (MDDS) board. While serving as the editor of the Articulator Magazine, she published dozens of her editorials and won two awards from the International College of Dentists for her editorial work . She has served the American Dental Association in the positions of Alternate Delegate and Delegate (elected by her peers) for a few years now. She currently chairs the MDDS outreach committee, she is a trainer for The Cavity Free at 3 Program, and is a member of the American Dental Association (ADA), the Colorado Dental Association (CDA), and the Metro Denver Dental Society (MDDS). She was awarded MDDS Volunteer of the Year award in 2013 and the MDDS Chair of the Year award in 2017.

    Dr. Carrie is married to her husband Jason who is a custom woodworker. They are the proud parents of five boys as well as proud chicken tenders of 8 hens. There are also 3 bunny rabbits and one cat mixed into their home life cacophony. In her free time (what’s that?!?) she enjoys reading, gardening, and being outdoors with her family.

    Dr. Paul Quiram, D.D.S.

    Dr Paul Quiram

    Dr. Paul Quiram graduated from St. John’s University in Collegeville, MN in 1985 with a degree in Biology. He married his high school sweetheart Mary Beth in August of 1985. He then went on to Dental School at the University of Minnesota and graduated in 1989 the same year that he had his first son Riley.

    In June of 1990, Dr. Quiram completed his general practice residency at the University of Washington in Seattle. During his residency he received additional training in oral surgery, anesthesia, and pediatric dentistry. In July 1990, he joined his father Lyle Quiram in family dentistry in Plainview, Minnesota where he worked until 2011. He also maintained an associate professor position at the University of Minnesota Dental School. While in Minnesota, Dr. Quiram served on the southeast Dental Society board, and was a member of the Minnesota Dental Society and the ADA. He also served on the National Evidence based Dental Committee.

    In November of 2011, Dr. Quiram sold his practice in Minnesota and his family moved to South Jordan, Utah to spend more time skiing and mountain biking in a milder climate. He worked as an associate dentist and was a dental consultant while in Utah. Dr. Quiram now works at My Dentist in Westminster, Colorado.

    Dr. William McMunn – Oral Surgeon

    Dr William McMunn

    Dr. McMunn was born and raised in San Antonio Texas. Upon graduation from high school, he attended the University of Texas where he received his Bachelors Degree in Biology. He graduated from the University of Texas Health Sciences in 1985. Afterward he pursued post graduate training in oral and maxillofacial surgery at Columbia Presbyterian Hospital in New York. He also received his medical degree from Columbia University College in 1992.

    In 2000 he moved to Colorado and entered private practice. In his spare time he enjoys racquetball, theatre, movies and skiing. His personal and professional philosophy is that each patient is at the center of their own heath care. He firmly believes that doctors should provide their patients with safe, honest and the utmost professional care that they would provide for their own family members or themselves.