Category Archives: Maine-Dentist

Douglas Delli Colli, DMD

Dr. Douglas Delli Colli grew up in a small town named Pepperell, MA just south of Nashua, NH. He graduated from the Univeristy of Massachusetts Amherst in 2005 with a B.S. in Microbiology, and then received his D.M.D. at Tufts University School of Dental Medicine in 2009. While studying at Tufts, he met his wife…
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Nichol Irene Penna, DMD

Dr. Nichol I Penna is a graduate of Thornton Academy, Colby College and Tufts University School of Dental Medicine. It was at Tufts University that she met her future husband Dr. Douglas Delli Colli. They were married in October 2011. Dr. Nichol Penna is an active member of the Greater Portland Dental Society, the Maine…
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Colette Sirois, DMD

Dr. Colette Sirois was born and raised in Waterville, Maine.  She pursued her undergraduate studies at Harvard University, earning her bachelor’s degree in history in 1977.  She continued on to the University of Connecticut School of Dental Medicine and earned her DMD in 1981. Dr. Sirois spent her first year out of dental school in…
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Demitroula Kouzounas, DMD

Dr. Demitroula Kouzounas is a graduate of Thornton Academy, the University of Maine Orono and Tufts University School of Dental Medicine. She also completed post graduate training at the 86thMedical Detatchment at Giessen, West Germany. Upon returning to Maine, Dr. Kouzounas and her husband Dr. Penna opened Dunstan Dental Center in 1984. Dr. Kouzounas has been…
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Joseph G. Penna, DMD

Dr. Joseph G. Penna is a graduate of Portland High School, the University of Maine Orono, and Tufts University School of Dental Medicine. Dr. Penna completed post graduate training at the 86thMedical Detatchment, Kirch Goens, West Germany. Dr. Penna also practiced for 2 years in a Maine Mall Group practice. Dr. Penna is married to Dr.…
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