Stuart Segelnick, DDS & Katherine Mantzikos, DMD

Sheepshead Bay’s dental specialists cover more than just routine cleanings. Stuart Segelnick, DDS & Katherine Mantzikos, DMD focus on periodontal care and dental implants, a niche that’s less common in general practice. Their office handles everything from gum disease treatment to implant placement, bridging the gap between restorative work and long-term oral health. For patients who’ve been referred for advanced gum therapy or tooth replacement, this is one of the few local names that comes up consistently.

The practice sits at 3165 Emmons Ave STE C1 Brooklyn, NY 11235, a stretch of Sheepshead Bay where medical offices share space with waterfront eateries and small shops. It’s a practical location for anyone coming from Marine Park or Gerritsen Beach, though the area’s parking can be hit-or-miss depending on the time. Dental implant consultations often require multiple visits, so proximity matters—especially when recovery or follow-ups are part of the process. Periodontal work isn’t the kind of thing you want to travel far for.

Unlike general dentists, this team zeroes in on the structures supporting teeth: gums, bone, and the fit of implants. That means procedures like gum grafting, bone regeneration, and sinus lifts—terms that sound intimidating until you’re the one needing them. They also manage the maintenance side, like deep cleanings for periodontal pockets or adjustments for implant-supported dentures. It’s the kind of specialized care that’s easy to overlook until you’re searching for it urgently.

Questions about treatment timelines or insurance coordination are best directed to their front desk at (718) 743-8279. For first-time visitors, the map listing clarifies the suite number—look for C1 in the building directory. The practice doesn’t advertise walk-ins, so planning ahead is the norm here.