Dental Surgical Guide Resin AC-HT
Grade
also Surgical Guide Resin
AC-HT = high-temperature / autoclave-optimised grade
Pick when the guide must survive repeated 134 °C prevacuum autoclave cycles without warping or losing bore accuracy.
Values for the AC-HT condition
Other Dental Surgical Guide Resin grades and fills
Dental Surgical Guide Resin is listed in 4 conditions; see the grade overview at Dental Surgical Guide Resin.
Compare all 4 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Impact-modified / tough guide resin | Use for full-arch or thin-wall guides and cutting templates where snap-off of flanges and sleeve seats is the failure mode. | 42 | 48 | 15 | 80 Shore D |
High-speed DLP/LCD grade | Choose for chairside throughput on LCD/DLP printers; slightly lower green strength and needs strict post-cure to hit rated properties. | 47 | 52 | 6 | 84 Shore D |
STD-CLRDefault Standard clear surgical guide resin | Default choice for implant drill guides and pilot guides printed on SLA/DLP/LCD dental printers and autoclaved at 121 °C. | — | 55 | 6 | 85 Shore D |
AC-HTThis page High-temperature / autoclave-optimised grade | Pick when the guide must survive repeated 134 °C prevacuum autoclave cycles without warping or losing bore accuracy. | 56 | 62 | 4 | 87 Shore D |
What is Dental Surgical Guide Resin AC-HT?
Dental Surgical Guide Resin AC-HT is Dental Surgical Guide Resin in the AC-HT grade — pick when the guide must survive repeated 134 °C prevacuum autoclave cycles without warping or losing bore accuracy. Dental Surgical Guide Resin AC-HT has a tensile strength of 62 MPa (8.99 ksi), stronger than 70% of polymer grades. Elongation at break is 4% and the elastic modulus is 2.6 GPa (0.377 Msi). Dental Surgical Guide Resin AC-HT has a density of 1.15 g/cm³ (0.0415 lb/in³), lighter than 57% of polymer grades. Its glass-transition temperature is 120°C (248 °F). STD-CLR is the default condition FabDigit quotes; AC-HT is available on request or by drawing note.
Limitations
- Low fracture toughness — 1 MPa·√m (0.91 ksi·√in), worse than 87% of polymer grades
- Limited ductility — 4%, worse than 78% of polymer grades
- Absorbs moisture — dry before molding — 0.6%, worse than 75% of polymer grades
Dental Surgical Guide Resin AC-HT properties
Typical room-temperature values for Dental Surgical Guide Resin AC-HT; 25 are specific to this condition. Other listed values are Dental Surgical Guide Resin reference data and may not represent this condition. Bars are the position among polymer grades.
Physical6
Dental Surgical Guide Resin AC-HT has a density of 1.15 g/cm³ (0.0415 lb/in³), lighter than 57% of polymer grades. Its glass-transition temperature is 120°C (248 °F).
Mechanical12
Dental Surgical Guide Resin AC-HT has a tensile strength of 62 MPa (8.99 ksi), stronger than 70% of polymer grades. Elongation at break is 4% and the elastic modulus is 2.6 GPa (0.377 Msi).
Thermal10
Dental Surgical Guide Resin AC-HT is rated for continuous service to 90°C (194 °F). It conducts heat at 0.21 W/m·K (0.121 BTU/hr·ft·°F), better than 55% of polymer grades. Thermal expansion is 80 µm/m·K (44.4 µin/in·°F).
Electrical2
Chemical & Environmental2
UV resistance is fair.
Sustainability3
Producing a kilogram of Dental Surgical Guide Resin AC-HT takes about 105 MJ of energy and emits 5.5 kg of CO₂ — more than 54% of polymer grades. Typical recycled content is 0%.
Manufacturability3
Dental Surgical Guide Resin AC-HT's machinability is fair (50/100, worse than 73% of polymer grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Dental Surgical Guide Resin AC-HT
Is Dental Surgical Guide Resin easy to machine?
Light bur trimming, sleeve-bore reaming and support-nub removal only — use sharp carbide/tungsten burs at moderate speed and light pressure; the cured thermoset chips and heat-smears if fed hard.
Can Dental Surgical Guide Resin be welded?
Not weldable; repairs and sleeve bonding are done with light-cure flowable composite or cyanoacrylate/methacrylate adhesive.
Can Dental Surgical Guide Resin be formed, bent or molded?
Printed on 385/405 nm SLA-DLP-LCD at 50–100 µm layers; orient the guide occlusal-side-down at 15–30° to keep drill bores support-free, then wash in fresh IPA (short cycle) and post-cure per IFU (e.g. 60–80 °C under N2 or in a nitrogen/heated cure unit) — properties and biocompatibility are only valid after full post-cure.
What surface finishes work on Dental Surgical Guide Resin?
No plating or anodising; finish is bur trim plus fine abrasive and cloth polish. Avoid over-soaking in solvent, dry-heat sterilise never above Tg, and store finished guides dark to limit yellowing.
Dental Surgical Guide Resin chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| urethane dimethacrylate (UDMA) oligomermain crosslinking oligomer backbone | 30 – 70 | 50 |
| Bis-EMA / Bis-GMA type methacrylategrade dependent; raises Tg and stiffness | 0 – 30 | 15 |
| nano/micro silica or glass fillersome grades unfilled for clarity | 0 – 15 | 5 |
| photoinitiator (TPO / BAPO type, 385–405 | 0.3 – 2.5 | 1.2 |
| stabilizers, dyes and pigments | 0.05 – 1.5 | 0.5 |
| reactive diluent methacrylates (TEGDMA, viscosity control; also drives cure shrinkage | ≥ 10 (balance) | — |
Dental Surgical Guide Resin AC-HT — frequently asked
What is Dental Surgical Guide Resin AC-HT used for?
Dental Surgical Guide Resin AC-HT is typically used for dental implant surgical guides, drill guides and temporary intraoral appliances. In short: class I/IIa biocompatible; sterilisable guide resin; post-cure critical to certification.
What is the tensile strength of Dental Surgical Guide Resin AC-HT?
Dental Surgical Guide Resin AC-HT has a typical tensile strength of 62 MPa (8.99 ksi) — stronger than 70% of polymer grades. Strength varies by condition: see the 4 listed tempers.
Is Dental Surgical Guide Resin AC-HT easy to machine?
Reasonably — machinability is rated fair (50/100, worse than 73% of polymer grades). Light bur trimming, sleeve-bore reaming and support-nub removal only — use sharp carbide/tungsten burs at moderate speed and light pressure; the cured thermoset chips and heat-smears if fed hard.
Can Dental Surgical Guide Resin AC-HT be welded?
Not weldable; repairs and sleeve bonding are done with light-cure flowable composite or cyanoacrylate/methacrylate adhesive.
What surface finishes work on Dental Surgical Guide Resin AC-HT?
No plating or anodising; finish is bur trim plus fine abrasive and cloth polish. Avoid over-soaking in solvent, dry-heat sterilise never above Tg, and store finished guides dark to limit yellowing.
Can Dental Surgical Guide Resin AC-HT be formed, bent or molded?
Printed on 385/405 nm SLA-DLP-LCD at 50–100 µm layers; orient the guide occlusal-side-down at 15–30° to keep drill bores support-free, then wash in fresh IPA (short cycle) and post-cure per IFU (e.g. 60–80 °C under N2 or in a nitrogen/heated cure unit) — properties and biocompatibility are only valid after full post-cure.
What is the maximum service temperature of Dental Surgical Guide Resin AC-HT?
Dental Surgical Guide Resin AC-HT is rated for continuous use to about 90°C (194 °F), and briefly to 134°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Dental Surgical Guide Resin STD-CLR and Dental Surgical Guide Resin AC-HT?
STD-CLR is the default condition — default choice for implant drill guides and pilot guides printed on SLA/DLP/LCD dental printers and autoclaved at 121 °C. AC-HT: pick when the guide must survive repeated 134 °C prevacuum autoclave cycles without warping or losing bore accuracy.
Sources
- ISO 10993-1 Biological evaluation of medical devices — Part 1 — ISO (2018)
- ISO 20795-2 Dentistry — Base polymers, Part 2: Orthodontic base polymers — ISO (2013)
- ISO 527 / ISO 178 / ISO 75 plastics test methods — ISO (2019)
- Surgical Guide Resin technical data sheet — Formlabs (2023)
- NextDent SG (Surgical Guide) instructions and TDS — NextDent / 3D Systems (2022)
- Freeprint splint / guide photopolymer data — DETAX (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.