Dr. Bob's Orthodontics, Invisalign, Braces, Adults and Children, bleaching, Traverse City, MI, Health Connections

Our primary dedication is to the enhancement of better dental health. We attempt to achieve this goal in the most pleasant and efficient manner possible. We believe in using any and all methods practicable to prevent or intercept an orthodontic problem, and where it has occurred, to treat it, with the objective of the best treatment end result possible.
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Our Services

List of Services

Braces for adults and children

Interceptive Orthodontics

MINI-SPEED Brackets

Advanced Wire Technology

Invisalign Braces for Adults

Digital Imaging/Radiographs

In-house Lab

In-school Dental Health Programs
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Family Care Program

The Family Care Program is designed to benefit the families that have chosen our practice for their orthodontic care. When a patient becomes a part of our practice, we feel a responsibility to the entire family.
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Pre-Orthodontic Guidance Program

We call it our Pre-Orthodontic Guidance Program or POG. Throughout this program we will continue to monitor your child's tooth, jaw and facial development until an optimum development stage has been reached at which to begin active treatment.
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Wooden Nickel Appreciation Program
We have developed an appreciation plan for our patients who strive to do "their very best" to keep their teeth clean, keep their appointments and follow directions on wearing cleaning and caring for their orthodontic appliances and braces. We call this reward system our WOODEN NICKEL PROGRAM.
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Dr. Bob’s Refer – A – Friend Program
The best referral sources we have are YOU, patients and family members, because you know all about Dr. Bob and our office. So, we would like to thank you for your support by awarding you for each friend you refer to our practice as of January 12, 2004 that is ready for treatment and starts within 6 months.
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Invisalign®
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Speed System™ Brackets
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Meet our Staff

Robert S. Portenga, DDS, MS

Dr. Bob has been a strong supporter of early treatment procedures to help severe orthodontic problems from growing into more complicated and costly treatment.
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Robin McGrath, RDH

Robin graduated from Ferris State University in June 1975. She worked in general dentistry for four years before coming to Dr. Bob's orthodontic practice in June 1979.
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Cheri Johnson, COA

Cheri likes learning new things from our patients and what they enjoy in life and watching them transform with their beautiful new smiles.
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Kathy Boyle, RDA

Kathy has been a dental assistant since she graduated from NMC in 1993 and a part of Dr. Bob's Team since 2002.
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Leighann Sammons

Our patients and their families become a part of our ‘family'.
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Tracie Hardy, CMA, AAMA

Tracie is a 1986 graduate of the Medical Assistant Program at NMC. She has worked in office administration ever since graduating and is the newest member of Dr. Bob's team.
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Robert S. Portenga, DDS, MS

432 Munson Avenue
Traverse City, MI 49686

Office Phone: 231-947-3570
Toll Free: 800-707-8925
FAX: 231-947-5160

Hours of operation:
Monday-Thursday
8 a.m. – 5 p.m.
Lunch 12-1 p.m.

Handicapped Accessible

Patient Testimonials
"Dr. Bob and staff: I am so pleased with my teeth after braces! Thank you! There are really no improvements that I can suggest after having such a great orthodontic experience!" ~ Emily Cybulla