This question often looks so simple but holds more meanings in that. During the examination of your dog, first you need to prepare the dog first psychologically for a better-restrained status. For this, you need to take a leash and place the dog on table by the careful delivery of suitable command.
When the dog is trying to avoid the thorough examination by the veterinarian, just try to distract the dog by simple scratching of your dog behind the ears, etc. Hence, the dog's attention is some what diverted from the examination procedures that are carried out often in a systematic manner.
However, there are obedient dogs, which will remain calm during an examination. Such dogs need to be given some patting on the shoulder or the body and praises. Perhaps, many owners may try to provide some treats that are liked so much by the concerned dogs. However, it all depends on the trainings offered to the concerned dog earlier and the effective follow up procedures by the owner for the maintenance of such reflexes during the examination.
Muzzles are required for some dogs if they behave in a different manner by objecting the examination procedures by the frequent movements of the body or trying to bite the veterinarian doing the examination of the dog. Hence, the owner needs to observe the dog closely during the examination to rule out any abnormal activity by the dog.
Restraining activities in a proper manner during the clinical examination of the dog are of highly appreciable if they are successful with the concerned dogs. Such control will be of highly helpful for the effective examination of the patient by the concerned veterinarian in the pet clinic.
If the dog gets more distracted during examination by means of restlessness, then one may even use the electronic equipments which will make some sound that are audible to the dogs' ear. Such things will be helpful in the proper distraction of the animal during the examination.