Yasuhiko Kamura DDS

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Yasuhiko Kamura DDS Diplomate of the American Board of Endodontics. Endodontist in Coppell, Tx
Accepting same day emerge Endodontist at Sigma Dental Specialist

Another unique tooth🦷
05/23/2026

Another unique tooth🦷

Thank you all for the comments. This patient had a history of orthognathic surgery with plate fixation, in which a fixat...
05/21/2026

Thank you all for the comments. This patient had a history of orthognathic surgery with plate fixation, in which a fixation screw perforated tooth #19. The tooth subsequently became symptomatic with localized swelling in the presence of an existing endodontic infection. Treatment options, including extraction versus apicoectomy, were discussed, and the patient elected to proceed with apicoectomy. Intraoperatively, a vertical root fracture was identified in the mesial root. Root-end resection was extended coronally until no visible fracture line remained, resulting in a shorter root than initially planned for resection.

What do you think is going on here, and how would you approach treatment? Comment below. #歯科
05/19/2026

What do you think is going on here, and how would you approach treatment? Comment below.

#歯科

Retreatment case: missed MB2 associated with PARLMaxillary second molar with a previously untreated MB2 presenting with ...
05/17/2026

Retreatment case: missed MB2 associated with PARL

Maxillary second molar with a previously untreated MB2 presenting with persistent periapical radiolucency.
Not every missed MB2 leads to pathology, especially when canals merge. But when a PARL develops in a retreatment case, untreated anatomy becomes a strong etiologic consideration.
CBCT and magnification help determine whether the missed canal correlates with the lesion.

My bonsai tree is growing slowly, but steadily.
05/16/2026

My bonsai tree is growing slowly, but steadily.

Tooth #2: Pulp Necrosis/ Symptomatic Apical Periodontitis. Curved canals #歯科
04/10/2026

Tooth #2: Pulp Necrosis/ Symptomatic Apical Periodontitis. Curved canals

#歯科

I usually assess the difficulty of a curved canal based on where the curve is and the radius of curvature—the more apica...
04/08/2026

I usually assess the difficulty of a curved canal based on where the curve is and the radius of curvature—the more apical the curve, the harder it is, and the smaller the radius, the more challenging it becomes.
In this case, the canal had an apical curve with a small radius, so I considered it a complex case. It needed to be carefully negotiated, with patency maintained and instrumentation done very gently. Otherwise, it could easily be ledged.
I start with a 20/.08 or***ce opener to about 15 mm to enlarge the or***ce. Once I achieve patency, I keep a #10 hand file in play and use gentle up-and-down motions to manually develop a glide path.
Next, I take a 20/.06 file, but not to full working length—only up to just before the curvature. After that, I use a glide path file or sometimes a 15/.04 to complete the path to full length.
For final shaping, I usually finish at 20/.04 or 25/.04. I don’t routinely go larger than 25/.04 unless the canal is clearly loose or wide.

New bone formation in endodontic lesions occurs after successful root canal treatment or surgery, which eliminates bacte...
04/07/2026

New bone formation in endodontic lesions occurs after successful root canal treatment or surgery, which eliminates bacteria causing apical periodontitis. The body repairs lost alveolar bone, a process often visible via imaging after 6–12 months. Healing involves complex bone remodeling where osteoblasts replace inflammatory tissue, often leading to full regeneration of the periodontal ligament (PDL) and lamina dura.

#歯科

#28 – a tricky premolarMost mandibular first premolars have one canal.This one started as a single canal and trifurcate...
02/27/2026

#28 – a tricky premolar
Most mandibular first premolars have one canal.
This one started as a single canal and trifurcated at the mid-root.
Three canals in #28 are rare (~1–2%), but these teeth are notorious for missed anatomy.

CBCT made it clear — the trifurcation was confirmed and treatment planned safely.

Tasty gelato
02/12/2026

Tasty gelato

Address

220 S Denton Tap Road, Suite 102
Coppell, TX
75078

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 3pm

Telephone

+14696196319

Website

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