Spontaneous vaginal delivery implies that the birth occurred without the need for forceps, vacuum, or any other instrumentation. This term does not imply that every part of the birth was without medical care or intervention. Lacerations (tearing of the tissues) can occur during spontaneous vaginal delivery and may require repair. A mother may choose different levels of pain relief and still experience a spontaneous vaginal delivery. This is still the most common type of delivery and that to which all other modes of delivery are compared.