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Our Story

70+ Years of Gentle Care
in West Allis, WI

Three dedicated dentists. One tight-knit community. A practice built on trust — one family at a time, since 1946.

A West Allis Landmark Since 1946

Gentle Smiles Dentistry has been part of the West Allis community for more than 70 years. The practice began in the mid-1940s, when Dr. William H. Wong opened a small neighborhood office dedicated to providing honest, patient-focused dental care. Over time, families across the area came to trust the practice for its gentle approach, strong clinical skills, and commitment to doing what's best for each patient.

His son, Dr. William G. Wong, continued that legacy, bringing advanced training and exceptional technical skill to the same West Allis location. Patients appreciated his attention to detail, steady hands, and calm, reassuring style of care. Under Dr. Wong's leadership, Gentle Smiles earned recognition from peers as one of the top general dentistry practices in the Milwaukee area.

Today, Dr. Wong and Dr. Park continue the Gentle Smiles tradition of delivering genuine, patient-focused dental care. By blending decades of trusted relationships with modern technology and updated techniques, they create a comfortable, family-friendly environment for every visit. From a child's first checkup to long-time patients who have been coming for years, the goal remains the same: listen closely, ease anxiety, and help every patient feel confident in their smile.

The Faces Behind Gentle Smiles

Three dentists with different backgrounds and specialties — united by a shared commitment to making every visit as comfortable as possible.

Dr. Wong

Dr. William G. Wong, DDS

Marquette University School of Dentistry · Class of 1984

A 1984 honors graduate of the Marquette University School of Dentistry, Dr. Wong carries on the rich tradition and philosophy of care established by his father, Dr. William H. Wong, in 1946 at this same location.

The dental profession has recognized and awarded Dr. Wong for his superior manual dexterity. This is reflected in his gentle touch and technical expertise. He enjoys working with all age groups.

His up-to-date knowledge of dental techniques and innovations allows him to provide excellent yet affordable dental care. His easygoing style, combined with foresight and attention to detail, are trademarks of his work.

Dr. Wong works very closely with his clinical assistants to provide genuine caring in your dental care.

Dr. Joon Park, DDS

Dr. Joon Jae Park, DDS

Marquette University School of Dentistry · Class of 2016 · Bilingual (English / Korean)

A 2016 honors graduate of the Marquette University Dental School, Dr. Park is dedicated to providing the highest quality comprehensive care to ensure that his patients have optimum oral health. To achieve this goal, he is committed to continuing education and lifelong learning.

Dr. Park, who moved to Wisconsin from South Korea in 2004 as an exchange student, is fluent in both English and Korean.

Dr. Dave Xiao, DMD

Dr. Dave Xiao, DMD

Midwestern University College of Dental Medicine

Dr. Dave Xiao is a graduate of the Midwestern University College of Dental Medicine, supported by advanced training in biomedical science and a nursing background. This strong foundation allows him to provide thoughtful, whole-patient care with a gentle, precise approach.

Drawn to dentistry's blend of science, skill, and personal connection, Dr. Xiao is committed to helping patients improve both their oral health and confidence. He emphasizes prevention and takes time to educate patients so they feel informed and comfortable with their treatment.

Outside the office, he enjoys cooking, traveling, hiking, fishing, and relaxing with a good show—hobbies that help him relate to patients and create a welcoming experience for every visit.

What We Believe About Dental Care

These are not slogans. They are the standards we hold ourselves to every single day.

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Honesty First

We only recommend treatment you genuinely need. We will always explain what we find, what it means, and what your options are — including doing nothing.

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Anxiety Is Welcome Here

Dental anxiety is real and common. We do not rush, we do not judge, and we take as much time as you need to feel comfortable before any procedure begins.

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Every Age, Every Stage

From a child's first exam to a grandparent's implant consultation, we are equipped to care for every member of your family under one roof.

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Modern Techniques, Personal Touch

We invest in current tools and methods — digital X-rays, tooth-colored restorations, Invisalign — while never losing the warmth of a neighborhood practice.

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Multilingual Care

Dr. Park is fluent in Korean. We believe every patient deserves to communicate comfortably with their dentist — in their own language.

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Respect for Your Time

We run on schedule. When you book an appointment, we honor it. We know your time matters as much as your oral health.