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Donald R. Welsh Jr., DMD and Samantha King, DMD

Welsh and King DMD dual-practitioner partnership dental care on Union Street Portsmouth NH

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+1 603-436-2144WebsiteUpdated Aug 28, 2026

About Donald R. Welsh Jr., DMD and Samantha King, DMD

Donald R. Welsh Jr., DMD and Samantha King, DMD provides dental care on 320 Union St in Portsmouth, New Hampshire. At the core of a general dental practice is preventive and restorative care: checkups, professional cleanings, fillings, and screening for decay and gum disease before either becomes a bigger problem. It is the kind of appointment most people need on a routine schedule rather than only when something hurts.

Left untreated, small dental problems tend not to stay small. A minor cavity that would have been a straightforward filling can progress to needing root canal treatment and a crown, and early gum inflammation that would have reversed with a good cleaning can progress toward bone loss around the teeth. Catching things early is generally the difference in both effort and cost.

Continuity matters in dental care — seeing the same practice over time means your history, X-rays, and any patterns in your oral health are already on file, rather than starting from scratch at each visit. That familiarity is part of what a regular dental home offers beyond any single appointment.

Dental anxiety is common, and most practices are used to working with nervous patients — through clear explanations of what is about to happen, a slower pace where needed, and sedation options for patients who want them. Avoiding the dentist out of anxiety tends to make eventual treatment more involved, not less.

Children benefit from starting dental visits early, generally by their first birthday or within six months of the first tooth coming through, mainly so they become familiar with the setting before any treatment is actually needed. Establishing that routine early tends to make ongoing checkups far less stressful for both child and parent.

Payment and insurance arrangements vary by practice and by treatment, so it is worth asking directly what is covered and what options exist for anything that is not, rather than assuming either way. Getting that clarified before treatment starts avoids surprises once it is underway. Contact details for Donald R. Welsh Jr., DMD and Samantha King, DMD are on this page, along with the full list of services offered — reach out to ask about scheduling.

Patients looking for general dentistry on 320 Union St in Portsmouth, New Hampshire can consider Donald R. Welsh Jr., DMD and Samantha King, DMD, which lists it among its treatments. The practice is open Monday through Thursday. Full service details and contact options are available on this page.

Clinic Details

Best Known For

General Dentistry

Business Hours

Monday
8:00 AM5:00 PM
Tuesday
8:00 AM5:00 PM
Wednesday
8:00 AM5:00 PM
Thursday
8:00 AM5:00 PM
FridayClosed
Saturday(Today)Closed
SundayClosed

Frequently Asked Questions

Where is Donald R. Welsh Jr., DMD and Samantha King, DMD located?
Donald R. Welsh Jr., DMD and Samantha King, DMD is a dental practice in Portsmouth, New Hampshire (ZIP 03801).
What services does Donald R. Welsh Jr., DMD and Samantha King, DMD offer?
It is a general and family dentistry practice, providing exams, cleanings, and fillings along with restorative and cosmetic treatment.
Does the practice treat children and adults?
Yes. The practice welcomes patients of every age, so a whole household can be seen at one office.
How often should I have a dental checkup?
Most dentists recommend a checkup and professional cleaning every six months, which helps catch problems while they are still small.
How do I book an appointment at Donald R. Welsh Jr., DMD and Samantha King, DMD?
You can contact Donald R. Welsh Jr., DMD and Samantha King, DMD directly from this page to ask a question or request an appointment.

Location

Services Offered

General Dentistry

General dentistry at Donald R. Welsh Jr., DMD and Samantha King, DMD brings together comprehensive exams, cleanings, fillings, and gum-health monitoring, the everyday care that keeps a Portsmouth smile in good shape.

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