歯科臨床英語：必須語彙とフレーズ

"chief complaint"

The primary symptom or concern that brings the patient to the dental appointment, stated in the patient's own words

"The dentist began the consultation by documenting the chief complaint: "Pain in the lower right molar for three days.""

"percussion test"

A diagnostic procedure in which the clinician taps a tooth to assess sensitivity, indicating possible pulpal or periapical pathology

"The percussion test on tooth 46 elicited a sharp pain response, suggesting acute apical periodontitis."

"probing depth"

The measurement in millimetres from the gingival margin to the base of the periodontal pocket, assessed with a calibrated periodontal probe

"Probing depth of 6 mm on the mesio-buccal surface of tooth 36 indicated moderate periodontal disease."

"vitality testing"

A clinical procedure using thermal or electrical stimuli to determine whether the dental pulp remains alive and responsive

"Vitality testing with a cold spray showed a delayed, prolonged response consistent with irreversible pulpitis."

"occlusal examination"

Assessment of how the upper and lower teeth meet and function together, including the identification of premature contacts and interferences

"The occlusal examination revealed a premature contact on the palatal cusp of the upper left first molar."

"furcation involvement"

The extent to which periodontal disease has affected the area where the roots of a multi-rooted tooth divide

"Class II furcation involvement was detected on the lower left first molar, requiring a more guarded prognosis."

"bleeding on probing"

The occurrence of haemorrhage from the gingival sulcus upon gentle insertion of a periodontal probe, indicating active gingival inflammation

"Widespread bleeding on probing confirmed generalised gingivitis throughout the upper and lower arches."

"palpation"

Manual examination of soft tissues and lymph nodes using the fingers to detect swelling, tenderness, or other abnormalities

"Palpation of the submandibular region revealed a tender lymph node, suggesting a spreading dentoalveolar infection."

"caries excavation"

The removal of decayed tooth structure using hand or rotary instruments before placing a restorative material

"Caries excavation was completed using a slow-speed round bur until all soft, infected dentine had been removed."

"composite resin"

A tooth-coloured restorative material composed of a resin matrix and filler particles, bonded to the tooth with adhesive systems

"A shade A2 composite resin was selected to restore the Class III cavity on the mesial surface of the upper lateral incisor."

"matrix band"

A thin strip of stainless steel or clear plastic placed around a tooth to provide a temporary wall for shaping interproximal restorations

"A Tofflemire matrix band and wedge were placed before condensing the amalgam into the proximal box."

"bonding agent"

An adhesive system applied to etched enamel and conditioned dentine to create a durable bond between tooth structure and restorative material

"The bonding agent was light-cured for 20 seconds before the first increment of composite was placed."

"occlusal loading"

The forces transmitted to a tooth or restoration during biting and chewing, which must be accounted for in restoration design

"The restoration was designed with a flat occlusal surface to distribute occlusal loading evenly across the cusp tips."

"amalgam condensation"

The process of compressing amalgam alloy into a prepared cavity using hand instruments to eliminate voids and adapt the material to cavity walls

"Proper amalgam condensation was confirmed by the absence of any voids at the gingival margin of the preparation."

"indirect restoration"

A tooth restoration — such as a crown, inlay, or onlay — fabricated outside the mouth in a laboratory and then cemented into place

"Due to the large size of the cavity, an indirect restoration in the form of a ceramic onlay was recommended."

"shade matching"

The process of selecting the correct colour and translucency of restorative material to achieve a natural appearance that blends with surrounding teeth

"Shade matching was performed under natural daylight before local anaesthetic was administered, as anaemia can affect colour perception."

"working length"

The distance from a coronal reference point to the apical foramen, measured prior to root canal instrumentation to prevent overextension

"Working length was confirmed at 21 mm using an electronic apex locator and verified with a periapical radiograph."

"pulpectomy"

The complete removal of the dental pulp tissue from both the coronal and radicular portions of the tooth

"A pulpectomy was performed under rubber dam isolation to prevent contamination of the root canal system."

"apex locator"

An electronic device that measures the electrical resistance between an endodontic file and oral mucosa to determine the position of the apical foramen

"The apex locator displayed a consistent reading at 0.5 mm from the apex, confirming accurate working length."

"obturation"

The three-dimensional sealing of the root canal system with an inert material, typically gutta-percha and a sealer, following canal preparation

"Warm vertical condensation was chosen as the obturation technique to ensure complete filling of lateral canals."

"irreversible pulpitis"

A clinical pulpal diagnosis indicating that the pulp tissue is inflamed beyond recovery and requires either extraction or root canal treatment

"The lingering cold pain lasting over 30 seconds confirmed irreversible pulpitis in the mandibular first molar."

"periapical abscess"

A localised collection of pus at the apex of a tooth, resulting from bacterial invasion of the pulp space and subsequent necrosis

"A periapical abscess had formed, causing significant swelling of the buccal mucosa and requiring urgent drainage."

"glide path"

A smooth, reproducible pathway from the canal orifice to the apical foramen, established with small hand files before rotary instrumentation

"Establishing a glide path with a size 15 K-file prevented rotary file fracture in the curved mesial canal."

"calcium hydroxide dressing"

A temporary intracanal medication placed between appointments to disinfect the root canal system and promote periapical healing

"A calcium hydroxide dressing was placed and the tooth temporised for four weeks before final obturation."

"scaling and root planing"

A non-surgical periodontal procedure that removes calculus and bacterial biofilm from below the gingival margin and smooths the root surface

"Scaling and root planing was performed in four quadrants under local anaesthesia to treat generalised Stage III periodontitis."

"subgingival calculus"

Hardened mineralised plaque deposits located below the gingival margin, typically dark brown or black in colour and tightly adherent to the root surface

"Heavy subgingival calculus was detected on all proximal surfaces of the lower anterior teeth during the periodontal examination."

"alveolar bone loss"

The destruction of the bony support around tooth roots, assessed radiographically as the primary indicator of periodontal disease severity

"Radiographic assessment revealed 40% alveolar bone loss on the distal aspect of the lower left first molar."

"gingival recession"

The apical migration of the gingival margin below the cemento-enamel junction, exposing the root surface

"Miller Class II gingival recession was documented on the buccal surface of the lower right canine."

"maintenance recall"

Scheduled follow-up appointments after active periodontal treatment to monitor stability, reinforce oral hygiene, and prevent disease recurrence

"A three-monthly maintenance recall interval was established given the patient's history of aggressive periodontitis."

"flap surgery"

A surgical periodontal procedure in which the gingival tissues are reflected to allow direct access to deep subgingival calculus and infrabony defects

"Flap surgery was carried out in the upper right quadrant to debride infrabony defects that had not responded to non-surgical therapy."

"bone graft"

A surgical procedure in which graft material is placed into a periodontal osseous defect to stimulate regeneration of lost alveolar bone

"A bovine-derived xenograft was placed into the three-wall infrabony defect as part of guided tissue regeneration."

"plaque index"

A numerical scoring system used to quantify the amount of dental plaque present on tooth surfaces as a measure of the patient's oral hygiene

"The full-mouth plaque index dropped from 78% to 22% following four weeks of intensive oral hygiene instruction."

"surgical extraction"

The removal of a tooth that cannot be extracted using forceps alone, requiring elevation of a mucoperiosteal flap and often removal of overlying bone

"A surgical extraction was necessary for the horizontally impacted lower left wisdom tooth, which lay entirely beneath the bone."

"alveoloplasty"

The surgical reshaping of the alveolar ridge to create a smooth, regular bone contour suitable for denture construction or implant placement

"Alveoloplasty was performed across the upper arch to reduce sharp bony prominences before fitting the immediate complete denture."

"incision and drainage"

A surgical procedure in which an intraoral or extraoral incision is made into a fluctuant abscess to release accumulated pus

"Incision and drainage of the vestibular abscess was performed under local anaesthesia and a drain sutured in place."

"haemostasis"

The arrest of bleeding, achieved through biting on gauze, suturing, haemostatic agents, or electrocautery following an oral surgical procedure

"Haemostasis was achieved by placing a collagen sponge in the socket and applying finger pressure for ten minutes."

"mucoperiosteal flap"

A surgical flap that includes both the mucosa and periosteum, elevated from the underlying bone to gain access for surgical procedures

"A three-corner mucoperiosteal flap was raised to expose the buccal bone before the surgical extraction."

"dry socket"

A painful post-extraction complication caused by the premature loss or breakdown of the blood clot in the socket, delaying healing

"The patient returned four days after extraction with severe pain; a dry socket was diagnosed and treated with an obtundent dressing."

"osseointegration"

The direct structural and functional connection between living bone and the surface of a dental implant, forming the biological basis for implant success

"Osseointegration was confirmed after twelve weeks by the absence of mobility and a high implant stability quotient reading."

"biopsy"

The surgical removal of a tissue sample from a suspicious oral lesion for histopathological examination to establish or exclude a diagnosis

"An incisional biopsy of the white patch on the lateral border of the tongue was sent to the oral pathology laboratory."

"full-coverage crown"

A fixed prosthesis that covers the entire clinical crown of a tooth, restoring form, function, and aesthetics after significant tooth loss

"A full-coverage crown in zirconia was planned for the endodontically treated upper right first molar to prevent cusp fracture."

"definitive impression"

A highly accurate record of the prepared teeth and surrounding soft tissues used by the dental laboratory to fabricate a fixed or removable prosthesis

"A definitive impression in polyvinyl siloxane was taken using a custom tray to capture all margin detail precisely."

"crown margin"

The edge where the crown meets the prepared tooth surface at the finish line; its precision determines the long-term seal and fit of the restoration

"The crown margin was prepared as a chamfer finish line 0.5 mm subgingival on the palatal aspect for aesthetic reasons."

"provisional restoration"

A temporary crown or bridge placed over prepared teeth to protect them and maintain aesthetics and function while the permanent prosthesis is being fabricated

"A chair-side provisional restoration was fabricated in PMMA resin and cemented with a non-eugenol temporary cement."

"retentive grip"

The resistance of a prosthesis to dislodgement along the path of insertion, determined by the taper and length of the preparation and the cement used

"Insufficient retentive grip on the short clinical crown required additional parallel walls to be cut using a diamond bur."

"overdenture"

A complete or partial removable denture that overlies and gains support and retention from natural tooth roots, copings, or implants

"An implant-retained overdenture was recommended as a more affordable alternative to fixed implant prosthetics."

"centric relation"

The maxillo-mandibular relationship in which the condyles are in their most superior and anterior position in the glenoid fossa, used as a reproducible reference position for prosthetic planning

"Centric relation was recorded using a leaf gauge and check bite before mounting the study models on a semi-adjustable articulator."

"porcelain fused to metal"

A traditional crown or bridge construction in which a layer of dental porcelain is baked onto a metal substructure to combine strength with tooth-coloured aesthetics

"Porcelain fused to metal was chosen for the three-unit bridge replacing the missing lower second premolar due to its proven longevity."