Expros TU17/UNC15 University of North Carolina Probe for 1-15mm Charting

Expros TU17/UNC15 University of North Carolina, SKU PS-D-66, is a double-ended dental diagnostic instrument made from German stainless steel for periodontal charting, caries detection, calculus identification, restorative margin assessment, and routine oral examination. The instrument combines a TU17 explorer working end with a UNC15 periodontal probe carrying 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, and 15mm markings for detailed sulcus and pocket measurement. The TU17 side provides angled tactile access for posterior proximal inspection, crown-edge review, cervical calculus detection, bridge-abutment assessment, cement remnant identification, furcation-adjacent review, and restorative transition checks. The UNC15 side records six-site periodontal readings, bleeding points, attachment-level findings, hygiene recall comparison, scaling follow-up, and peri-implant mucosal assessment. General dentists, periodontists, restorative clinicians, dental hygienists, endodontists, oral surgery teams, orthodontic departments, dental schools, hospital dental units, veterinary dental practices, distributors, and procurement teams use this pattern in reusable diagnostic tray setups.

TU17 Explorer Angulation and UNC15 Probe Mechanics

The Expros TU17/UNC15 University of North Carolina uses two diagnostic working geometries on one balanced stainless handle, allowing the clinician to move from angled surface exploration to measured periodontal probing without changing instruments. The TU17 side has a fine contra-angled terminal form designed for controlled contact along posterior proximal surfaces, cervical grooves, crown margins, bridge abutments, restoration transitions, calculus ledges, furcation-adjacent contours, and exposed root surfaces. Its slender tip transmits changes from softened enamel, marginal ditching, rough cement, residual composite flash, and subgingival deposits through the shaft to the operator’s fingers. The UNC15 side has a narrow marked end with a rounded terminal shape for axial insertion along the root surface during pocket measurement. Black millimeter references are read at the gingival margin while the tip contacts the sulcus base or periodontal defect. Long shanks preserve visibility around mirrors, suction, cheeks, tongue, and adjacent teeth. The textured cylindrical handle enables wet-glove finger rotation, while the one-piece format avoids ratchets, springs, locks, pivots, and box joints because control depends on manual pressure, tip orientation, and visual marking interpretation.

Periodontal Charting and Posterior Diagnostic Sequence

During periodontal assessment, the UNC15 end is introduced after visual tissue inspection, plaque review, and supragingival calculus evaluation. The clinician inserts the rounded end parallel to the long axis of the tooth and records measurements at mesiobuccal, midbuccal, distobuccal, mesiolingual, midlingual, and distolingual sites. Lower readings document routine maintenance findings, while deeper references record pocket progression, bleeding response, attachment loss, furcation-adjacent defects, therapy response, or referral data. Hygiene and periodontal teams use the same side during recall appointments, scaling and root planing review, peri-implant mucosal checks, and supportive therapy. The TU17 side is selected for posterior proximal review, cervical calculus detection, crown-seat inspection, bridge-abutment assessment, orthodontic band checks, cement cleanup, and restorative margin evaluation. Restorative clinicians use the angled tip around composite interfaces, amalgam edges, inlay lines, onlay transitions, veneer margins, and fixed prosthetic contours. Endodontic teams use it to inspect access outline margins, while oral surgery and veterinary dental clinicians include the instrument in pre-extraction and posterior oral examination trays.

1mm to 15mm UNC Marking Use

The TU17 component is selected when the clinical task requires angled tactile surface exploration rather than numeric pocket recording. Its geometry reaches posterior proximal margins, cervical contours, restoration edges, calculus shelves, residual cement, furcation-adjacent surfaces, and exposed root areas with controlled pull strokes. The UNC15 component is selected when the operator needs periodontal measurements across a 1mm to 15mm range. The 1mm, 2mm, and 3mm references document shallow sulcus readings around stable gingival margins and recall patients. The 4mm, 5mm, and 6mm markings identify developing pocket depth that affects debridement planning, bleeding notation, and post-scaling comparison. The 7mm, 8mm, and 9mm references are used around molars, furcation-adjacent contours, bridge abutments, root concavities, and implant-supported posterior restorations. The 10mm through 15mm markings support severe periodontal assessment before full-mouth charting review, surgical consultation, extraction planning, or referral. The textured handle allows compact finger rotation and fast reversal between the explorer and probe sides during combined restorative inspection and periodontal documentation.

German Steel Finish, Reprocessing, and Procurement Records

German stainless steel gives the Expros TU17/UNC15 University of North Carolina the stiffness required for tactile diagnosis while preserving the fine TU17 explorer tip and UNC15 marked end through repeated clinical use. The polished working ends allow inspection after cleaning, while the satin-style textured handle reduces glare under operatory lighting and maintains grip control with wet gloves. Reprocessing follows standard reusable dental instrument workflow: point-of-use debris removal, careful cleaning around the angled tip and marked probe, ultrasonic cleaning when included in facility protocol, rinsing, drying, visual inspection, packaging, and steam autoclave sterilization. A single-piece metal body simplifies instrument counts because there are no detachable measuring sleeves, plastic inserts, or disposable tips. CE marking supports international medical device procurement, and ISO 13485 certification reflects manufacturing controls expected by hospitals, clinics, dental schools, distributors, and institutional buyers. FDA-compliant procurement context helps United States buyers maintain reusable hand instrument records. The product supports single-piece replacement, custom diagnostic set assembly, distributor ordering, OEM programs, after-sale assistance, and routine replenishment for professional dental and veterinary supply channels.

How does this differ from an Expros 3A/UNC15?
Expros TU17/UNC15 University of North Carolina pairs a TU17 explorer end with a UNC15 periodontal probe, while an Expros 3A/UNC15 uses an Explorer 3A end with the same 1mm to 15mm measurement scale. The TU17 side gives stronger angled access for posterior proximal margins, distal molars, crown edges, bridge-abutment areas, and furcation-adjacent surfaces. The 3A pattern is more focused on curved tracing along occlusal fissures, cervical grooves, and restorative transitions. Both instruments support detailed periodontal charting through the UNC15 side. This product is selected when posterior access and restorative margin review are central to the examination. Expros TU17/UNC15 University of North Carolina is suited to hygiene recall, periodontal documentation, restorative assessment, peri-implant review, and dental school examination trays.

How should the 1mm to 15mm UNC15 markings be selected?
Expros TU17/UNC15 University of North Carolina uses the 1mm, 2mm, and 3mm references for shallow sulcus readings around stable gingival margins and maintenance patients. The 4mm, 5mm, and 6mm markings support documentation of developing pocket depth, localized bleeding response, calculus retention, and post-scaling comparison. The 7mm, 8mm, and 9mm references are used around molars, furcation-adjacent contours, bridge abutments, root concavities, and implant-supported posterior restorations. The 10mm, 11mm, and 12mm levels support advanced defect recording before periodontal therapy review or surgical consultation. The 13mm, 14mm, and 15mm markings support severe pocket documentation before referral, extraction planning, or complex periodontal records. The TU17 side remains available during the same appointment for caries detection, calculus confirmation, and restoration transition checks.

How do CE, ISO 13485, and FDA procurement requirements apply?
Expros TU17/UNC15 University of North Carolina is supplied for professional dental purchasing where reusable hand instrument documentation is required. CE marking supports international procurement records for hospitals, clinics, dental schools, distributors, and institutional buyers. ISO 13485 certification reflects manufacturing controls used in regulated medical device supply. FDA-compliant procurement context helps United States buyers maintain vendor files and reusable dental instrument records. These references support tender preparation, distributor onboarding, clinic audits, product file review, and multi-location purchasing approval. The instrument remains a non-powered dental explorer and periodontal probe for professional chairside examination.

How are the TU17 explorer, UNC15 probe, and handle controlled during use?
The control feature on Expros TU17/UNC15 University of North Carolina is the double-ended working geometry combined with the textured cylindrical handle. The clinician rolls the handle between the thumb and index finger to orient the TU17 tip against posterior proximal, cervical, or restorative surfaces. For periodontal charting, the UNC15 end is aligned parallel to the root surface and advanced with light pressure until the pocket base is contacted. The black marking is read at the gingival margin before the end is withdrawn or moved to the next recording site. There is no ratchet, spring, lock, pivot, or box joint because the instrument depends on manual pressure and precise shank angulation. This handling pattern supports sequential caries, calculus, restoration, and periodontal assessment without changing instruments.

How should clinics and distributors manage sterilization and supply?
Expros TU17/UNC15 University of North Carolina is a reusable German stainless steel dental instrument suitable for standard clinical tray reprocessing. After use, staff remove visible debris, clean the TU17 explorer tip and UNC15 marked end carefully, rinse, dry, inspect both working tips, package the instrument, and steam autoclave it according to facility protocol. The one-piece metal construction supports repeated turnover in examination, periodontal, hygiene, restorative, endodontic review, orthodontic, oral surgery, and veterinary dental trays. Hospitals and teaching clinics can stock the same pattern across departments to standardize diagnostic inspection and periodontal recording. Distributors can order single pieces or include the item in custom diagnostic kits for professional buyers. The $4.07 USD price supports replacement ordering, department replenishment, and multi-chair clinic inventory planning.