Complex sentence: Direct composite fillings are rated to be sensitive to the skills and technique of placing, as an example a rubber dam is rated to be important to achieve low fracture rates and a longevity similar to amalgam in the more demanding proximal Class II cavities.
Split into simpler sentences: Direct composite fillings are rated to be sensitive to the skills and technique of placing,. For example, a rubber dam is rated to be important to achieve low fracture rates and a longevity similar to amalgam in the more demanding proximal Class II cavities.