• Trenton Call: (734) 675.1170 | Fax: (734) 675.0688
  • Wyandotte Call: (734) 282.4100 | Fax: (734) 282.5420
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Established 1955

Welcome to our health education library. The information shared below is provided to you as an educational and informational source only and is not intended to replace a medical examination or consultation, or medical advice given to you by a physician or medical professional.


Human teeth are categorized into four types depending on size, shape and function.

Incisors are located at the front of the mouth and are used for cutting food with their sharp edges. Adults have eight incisors, four in the upper jaw and four in the lower jaw.

Canines resemble the pointed fangs of dogs and are sharp and strong. There are two canines in each jaw and their primary purpose is to tear food.

Bicuspids, or premolars, are flat teeth whose central purpose is to grind and crush food. There are four bicuspids in each jaw.

Molars are located behind the bicuspids. They serve the purpose of an anvil with all the other teeth serving like hammers. There are 12 sets of molars, three sets in each jaw. The third molars are the last to come out and are normally called the wisdom teeth. They are normally not required for chewing and, because they cause the teeth to crowd, are typically extracted.

Patient Reviews

Of the people whose smiles I admire, I have asked 1 common question. "Who was your Orthodontist!" Overwhelmingly the answer has been Dr Lupini. That is inarguably the Greatest testimony for his work and the results that you also will receive!

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Mon-Fri offers alternating 7:30-4:30, or 12-6pm appointments.
Please call our office to verify daily hours. We can be a little flexible to meet your needs.


Established 1955

John Lupini, DDS, MS, is the director of True Orthodontics, which specializes in early orthodontic treatment, teeth straightening, Invisalign alternatives, and treats children and adults. True Orthodontics serves all of the downriver communities including but not limited to Southeastern Michigan, Wayne County, Monroe County, Macomb County, Oakland County, Downriver, Trenton, Grosse Ile, Woodhaven, Trenton, Riverview, Wyandotte, Melvindale, Ecorse, River Rouge, Detroit, Taylor, Westland, Garden City, Lincoln Park, Allen Park, Dearborn, Dearborn Heights, Romulus, Belleville, Huron Township, Van Buren Township, Flat Rock, Rockwood, Gibraltar, Brownstown, Monroe, Frenchtown, Newport, Carleton, Southgate and surrounding communities.