Addent, Inc. - Advancing Dental Excellence

Contact us: (203) 778-0200 

Discover the Power of a Heated Composite Dispenser with Compex HD

Compex HD

Composite Warming and Science

Over 60 studies have shown the benefits of heating composites prior to placement. Most of the studies used the AdDent Calset, the first composite heater designed for the dental profession. These proven benefits include increased flow as you would expect but the advantages of preheating go much further.


  • Ease of dispensing viscous materials.
  • Greater depth of polymerization and increased strength
  • Shorter curing time
  • Better adaptation to cavity walls
  • Less microleakage
  • Better color stability
  • Less shrinkage and shrinkage stress.
  • Fewer enamel fractures due to shrinkage stress.
  • Less patient post-operative sensitivity.
  • Longer lasting restoration.

Compex HD

For optimum temperature, all the benefits of heated delivery, Compex HD delivers the perfect flow for all restorative procedures including injection molding and porcelain cementation. Compex HD heats all compules to 155°F (68°C) in 40 seconds. Up to 100 compules can be dispensed without recharging. This all-in-one, lightweight, heated dispenser saves space and easily moves from room to room. Fast compule insertion and ejection saves time. Infection control is addressed with included autoclavable silicone sleeves and barrier bags that prevent cross-contamination. The ease, convenience, and comfort of Compex HD make it a must-have for your practice.


  • Lightweight handheld rechargeable device.
  • Heats a broad range of compules
  • Heats compules to 155°F (68°C) in 40 seconds
  • Heats up to 100 compules without recharging.
  • Easy to load and unload with a patented ejector mechanism.
  • Silicone sleeve and barrier bag
  • Short recharge time.


  • Comfortable all in one heater and dispenser – saves space, easily moved room to room.
  • Heats composite compules currently on the market.
  • Delivers all composie without temperature loss. 
  • Charge no more than once per week under normal use.
  • Fast compule insertion and removal saves time.
  • Minimizes cross contamination by dentist or assistant.
  • Full charge time is only 4 ½ hours

“The Compex heating gun is a fantastic advancement and innovation in the arena of composite placement. It is an extraordinarily well designed mechanism with infection control features that are currently unsurpassed and so easy to use. My students and I have truly enjoyed the opportunity to work with it and look forward to always working with heated composite.”

John Comisi, DDS

What is Thermally Assisted Polymerization? Why should I warm my composite before placement?

VideoWatch Video


Viscosity Comparable to Flowables with Less Stickiness

Increases Microhardness

Heating composite increases micro-harness and flowability, resulting in easier placement and greater monomer conversion.


  1. Effect of Preheating on Microhardness & Viscosity – Ayub Santos
  2. Effect of Preheating on Microhardness and Viscosity of 4 Resin Composites – Karen V. Ayub, DDS, MSc; Gildo C. Santos, Jr., DDS, MSc, PhD; Amin S. Rizkalla, BSc, MEng, PhD; Richard Bohay, DMD, MSc; Luis Fernando Pegoraro, DDS, MSc, PhD; José H. Rubo, DDS, MSc, PhD; M. Jacinta M.C. Santos, DDS, MSc, PhD
  3. The Effect of Temperature on Hardness of a Light-curing Composite – I. Krejci
  4. Influence of pre-cure temperature on Vickers microhardness – Torres Caneppele
  5. Prewarming effect on adaptation, porosities, and strength of a composite resin.  K.H. Bolding, A.E. Hill, D. Tantbirojn, A. Versluis

Increased Monomer Conversion & Shorter Cure Times

Monomer conversion is significantly increased with shorter cures times, when composite is heated.


  1. Composite Pre-heating: Effects on marginal adaptation, degree of conversion and mechanical properties – Nívea Regina Fróes-Salgadoa, Luciana Maria Silvaa, Yoshio
  2. Curing Efficiency of a Direct Composite at Different Temperatures – L. Littlejohn
  3. Monomer Conversion of Pre-heated Composite – M. Daronch
  4. Pre-heated Resin Composite. Temperature Effects on Monomer Conversion and Kinetics – M. Daronch
  5. Pre-Heating Composite: Temperature Effect on Monomer Conversion and Contraction Stress (Poster) – M. Daronch
  6. Pre-heating of high-viscosity bulk-fill resin composites: Effects on shrinkage force and monomer conversion. Journal of Dentistry – Taubock Tobias T, Tarle Zrinka, Marovic Danijela, Attin Thomas.
  7. The Effect of Temperature on Composite Polymerization Stress and Degree of Conversion – Fernando C. Calheiros, Marcia Daronch, Frederick A. Rueggeberg, Roberto R. Braga

Deeper Cures

Heated composite increased the monomer conversion rate, depth of cure and surface hardness with shorter cure times.


  1. Effect of pre-heating on depth of cure and surface hardness of light-polymerized resin composites – AJD Munoz
  2. The Influence of Temperature on the Efficacy of Polymerization of Composite Resin – Wedad Y. Awiliya, BDS.MSC
  3. Improving the Polymerization of Composite Resins – Mitch Conditt, Karl Leinfelde
  4. Polymerization Kinetics of Pre-Heated Composite – M. Daronch, F. A. Rueggeberg, M. F. De Goes, R. Giudici
  5. Temperature Influence on the Depth of Cure of a Composite – P. Burtscher
  6. Thermal Effects on Composite Photopolymerization Monitored by Real-time NIR – M. Trujillo
  7. Thermally Assisted Flow and Polymerization of Composite Resins – Joshua Friedman

Shrinkage/Shrinkage Stress

Heated composite allows for reduced curing time and lower polymerization stress while maintaining or increasing degree of conversion.


  1. The Effect of Temperature on Composite Polymerization Stress and Degree of Conversion – Fernando C. Calheiros, Marcia Daronch, Frederick A. Rueggeberg, Roberto R. Braga
  2. Polymerization Shrinkage of Composite Resins – A Langalia, A Buch, M Khamar, P Patel
  3. Pre-heating of high-viscosity bulk-fill resin composites:Effects on shrinkage force and monomer conversion. Journal of Dentistry – Taubock Tobias T, Tarle Zrinka, Marovic Danijela, Attin Thomas.

Bonding and Adhesion

Heated composite demonstrated higher flexural strength and adhesion to dentin.


  1. Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds – Papacchini F., Magni E., Radovic I., Maxxitelli C., Monticellia F., Goracci C., Polimeni A., Ferrari M.
  2. Effect of pre-cure temperature on the bonding potential – Amerigo Cantoro, Cecilia Goracci, Federica Papacchini, Claudia Mazzitelli, Giovanni Maria Fadda, Marco Ferrari
  3. Flexural Strength of Preheated Resin Composites and Bonding Properties to Glass-Ceramic and Dentin – Matthias Richard Kramer, Daniel Edelhoff and Bogna Stawarczyk
  4. Thermal and bioactive optimization of a unidose 3-step etch-and-rinse dentin adhesive – Pascal Magne, DMD, PhD and Adriana Lemos Mori Ubaldini, DDS, MS
  5. Effect of Pre-heating on Microtensile Bond Strength of Composite Resin to Dentin –  A. Davari, A. Daneshkazemi, B. Behniafar, M, Sheshmani

Repeated Heating

Reheating or extended heating of composite does not effect monomer conversion values.


  1. Effect of Repeated and Extended Heating on Conversion of Composites – M. Daronch
  2. Effect of Specimen Temperature on the Polymerization of a Resin-composite – Richard B. Price, J.M. Whalenb, Thomas B. Price  Christopher M. Felix, John Faheye

Doesn't Alter Physical Properties

Heating composite did NOT alter the mechanical properties but provided enhanced adaptations to the preparation wall.


  1. Composite Pre-heating: Effects on marginal adaptation, degree of conversion and mechanical properties – Nívea Regina Fróes-Salgadoa, Luciana Maria Silvaa, Yoshio Kawanob, Carlos Franccia, Alessandra Reisc, Alessandro D. Loguercio
  2. Effect of multiple preheating cycles on hardness of composite materials – A. Pokorny
  3. Effect of Precuring Warming on Mechanical Properties of Restorative Composites – Kareem Nada, Omar El-Mowafy
  4. Effect of Preheating and Fatiguing on Mech Prop of Comp Resin – AA Abdulmajeed
  5. Effect of Preheating and Precooling on the Flexural Strength and Modulus – F Sharafeddin
  6. Effect of Pre-Heating on Some Physical Properties of Composite Resin – Myoung Uk Jin, Sung Kyo Kim
  7. Effect of Pre-heating on the Viscoelastic Properties of Dental Composite Under Different Deformation Conditions – Kyung Hyun Ahn, Sanghyuk Lim, Kee Yeon Kum and Seok Woo Chang
  8. Effect of Pre-heating on the Viscosity and Microhardness of a Resin Composite – S. Lucey, C. D. Lynch, N. J. Ray, F. M. Burke & A. Hannigan
  9. Pre-heating mitigates composite degradation – Jessika Calixto da SILVA, Rogério Vieira REGES, Inara Carneiro Costa REGE, Carlos Alberto dos Santos CRUZ, Luís Geraldo VAZ, Carlos ESTRELA, Fabrício Luscino Alves de CASTRO

Lower Water Sorption/Solubility Values

Higher temperatures and shorter cure times of heated composite led to lower sorption and solubility values.


  1. Temperature and Curing Time Affect Composite Sorption and Solubility – Fabricio Luscino Alves de Castro, Bruno Barbosa Campos, Kely Firmino Bruno, Rogerio Vieira Reges
Addent, Inc. - Advancing Dental Excellence

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AdDent, Inc
43 Miry Brook Rd, Danbury, CT 06810

Phone: (203) 778-0200
Fax: (203) 792-2275

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